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AbanteCart humbly proclaims itself to be the "most powerful eCommerce platform to sell anything." Key features for marketing teams include responsive templates, audio/video support, customer reviews, customer wishlists, coupons, an affiliate system, localization, SEO, smart search, storefront banners and more. Operating System: Windows, Linux.
This PHP-based shopping cart features mobile support, easy Facebook integration and a visual CSS editor. Paid support and hosting are available. Operating System: Windows, Linux.
507. Broadleaf Commerce
One of the more popular open source ecommerce solutions, Broadleaf is modular and Java-based. Key features include promotions, personalized offers and discounts, personalized ad targeting, promo code support, built-in content editing, multi-currency support, product information management, smart search and browse, SEO management and more. Paid services are available. Operating System: Windows, Linux, OS X.
Built on the Django framework, Cartridge is a clean, simple shopping cart that focuses on providing the most essential features. It integrates with the Mezzanine content management platform and is highly customizable. Operating System: Windows, Linux, OS X.
Based on WooCommerce and Jigoshop, ColorShop offers an advanced filtering and ordering system, photographs, reviews and much more. The developers behind the project also offer paid themes. Operating System: OS Independent
Used by tens of thousands of merchants, CubeCart bosts features like unlimited products, built-in statistics, gift certificates, coupons, social media plug-ins, customizable SEO features, Google Analytics support and more. Paid technical support is available, and hosting and other services are available through partners. Operating System: Linux.
Based on osCommerce, Digistore features a WYSIWYG editor, advanced templating, in-store advertising, express checkout, customer reviews, multilingual and multicurrency support, reporting and more. Paid customization services are available. Operating System: Windows, Linux, OS X.
512. Drupal Commerce
Designed for users with some development expertise, Drupal Commerce is a framework useful for building online shopping sites of all sizes. It includes a payment method API, tax calculation, dynamic product display, discount pricing rules and more. Operating System: Windows, Linux, OS X
This ecommerce extension comes with advanced search capabilities, social tools, product comparison and five themes. Paid plugins add more functionality, including export/import, featured products and best-sellers. Operating System: Windows, Linux, OS X
For WordPress users, eShop offers features like optional customer sign-in, downloadable products, basic statistics and sales data, multple shipping options, basic stock control, sales tax and more. It integrates with PayPal and has several companion plug-ins that extend its functionality. Operating System: OS Independent
Simple and flexible, HikaShop offers international sales, powerful statistics, responsive layout, marketing tools and much more. For additional features, users can download the paid essential or business versions. Operating System: Windows, Linux, OS X
This plug-in installs with just one click and works with any WordPress theme. It's highly flexible, SEO-friendly, and accepts multiple currencies. Operating System: OS Independent
Interchange is both an ecommerce system and a Perl-based application server. Now two decades old, it’s a mature platform with thousands of users. Operating system: Linux, OS X
518. Isotope eCommerce
Isotope is an ecommerce plug-in for Contao CMS, a Web content management system designed to be accessible to people with disabilities. It's highly flexible and paid support is available for purchase. Operating System: OS Independent
Java-based JadaSite offers one-page checkout, support for multiple payment gateways, Microsoft Bing translator, inventory tracking, date-based sale pricing, cross-sell and up-sell features, multi-lingual and multi-currency capabilities, coupon support, item ratings, multiple discounting options, personalization features and more. Paid implementation, consultation and customization are available. Operating System: OS Independent
Also for WordPress, Jigoshop describes itself as "a well-established e-commerce platform that combines broad functionality, easy migration options and professional support packages." Several levels of small business and enterprise support are available, as are paid extensions. Operating System: OS Independent
521. Lightspeed Web Store
This ecommerce platform was designed for brick-and-mortar retailers that want to have an online presence. It integrates with Lightspeed's POS solutions. Source code is available at GitHub. Operating System: OS Independent
522. Loaded Commerce
Used by more than 10,000 stores, Loaded boasts that it is "the most powerful ecommerce software available." Key features include comprehensive catalog and shopping cart, data-driven inventory management, digital downloads, affiliate system, and more. Paid Pro and B2B versions are available. Operating System: Windows, Linux
Magento claims to have powered more Internet Retailer Top 1000 merchants than anyone else for three years in a row and to process more than $50 billion in transactions each year. In addition to the community edition, it comes in enterprise and enterprise cloud editions. Operating System: Windows, Linux, OS X.
Built for SMBs, this PHP-based ecommerce solution is easy to maintain and expand. To use it, you will also need MySQL version 5 or later. Operating System: Windows, Linux, OS X
MarketPress combines the functionality of dozens of WordPress plug-ins into one comprehensive ecommerce solution. It also comes in a paid Pro version with additional features. Operating System: OS Independent
This is the only open source ecommerce platform on the list that claims it "makes merchants smarter." The project gathers social analytics data from its users and shares the insights with MerchantTribe members. Several free reports are available for download on the site, and MerchantTribe also offers paid hosting. Operating System: Windows, Linux, OS X
This turnkey shopping cart solution offers unlimited products and categories, reviews, ratings, downloadable products, wishlists, product comparison, one-page checkout, advanced reporting, a rewards system and more. Paid versions are also available, and the same developer also offers a Joomla ecommerce plug-in called MijoShop. Operating System: OS Independent
Created with developers in mind, Moltin is an API-based framework for adding ecommerce functionality to websites. Both free and paid versions are available on the website; you can find the source code at GitHub. Operating System: Windows, Linux, OS X
Claiming to be "stable and highly usable," nopCommerce has been downloaded more than 1.5 million times. Key features include mobile commerce, multi-store capabilities, SEO, and marketing features like a reward points system, discounts and coupons, Facebook export, related products upselling, newsletter subscriptions, product reviews and ratings, product comparison and an affiliate program. Operating System: Windows.
"Feature-rich and user-friendly," OpenCart offers a visually appealing interface, multi-currency and multi-language support, product reviews and ratings, SEO, PCI compliance, sales reports, discounting and more. Commercial support is provided through partners. Operating system: Windows, Linux, OS X
This ecommerce plug-in includes CRM capabilities and works with any WordPress theme. Although the plug-in is free and open source, the site mainly promotes the SaaS versions. Operating System: OS Independent
532. Orilla Cart
Orilla Cart promises unlimited customization, flexible layouts, ease of use, speed and agility. Paid support is available. Operating System: OS Independent
A fork of osCommerce (see below), osCMax boasts features like vouchers and coupons, virtual product support, web-based administration, customer loyalty discounts, SEO-friendly URLs, an article manager and more. Paid documentation is available. Operating System: Windows, Linux
Used by more than 280,000 online stores, osCommerce has been around for 16 years. Services are available through third-party partners. Operating System: Windows, Linux, OS X.
535. OXID eShop
OXID offers B2B and B2C ecommerce, as well as omnichannel solutions. The open source version is called eShop, and it has a large and vibrant user community. Operating System: Windows, Linux, OS X
Based on Ruby on Rails, Piggybak offers "basic shopping cart and one-page checkout functionality." There's a demo on the site so that you can see it in action. Operating System: Windows, Linux, OS X
Slightly less polished than some of the other ecommerce solutions on our list, Plici promises a "powerful and extensible" solution. Much of the documentation is in French, but English translations are available. Operating System: Windows, Linux
Boasting more than 250,000 users, PrestaShop is a very popular ecommerce solution with mobile-responsive design, advanced SEO features, in-depth sales statistics, dynamic pricing rules, coupons and vouchers, reviews, loyalty programs and email marketing. Paid cloud and expert versions are available, as well as the free download. Operating System: Windows, Linux, OS X.
Based on Ruby on Rails, Ror-e.com is a very simple shopping cart designed for small businesses. The website includes a demo so you can see it in action. Operating System: Windows, Linux, OS X.
Based on Satchless (see below), Saleor is a full-fledged ecommerce store. It’s SEO-friendly, optimized for performance and easily customizable. Operating System: Windows, Linux, OS X.
Satchless is for experienced developers who want to build an ecommerce site using Python. You can use it with or without a framework like Django or Flask. Operating System: Windows, Linux, OS X.
542. Self Commerce
Forked from xt:Commerce (see below), this ecommerce project is based on PHP and SQL. Note that much of the website is in German. Operating System: Windows, Linux, OS X
Formerly a paid plug-in, Shopp is now free and open source (although users can still purchase paid support if they wish). It boasts outstanding security, integration with many payment processing services, fast performance and more. Operating System: OS Independent
Developed in New Zealand, this e-commerce platform comes with two free hours of support. Paid support is also available, and the website functions as a working demo. Operating System: OS Independent
545. SimpleCart (js)
If you don't want all the bells and whistles, this WordPress plug-in might be for you. It's a simple cart that accepts PayPal only. Operating System: OS Independent
Another bare-bones, PayPal-only solution, this shopping cart is lightweight and easy to use. It is highly rated and has been installed more than 40,000 times. Operating System: OS Independent
For Windows users, SmartStore.NET is a multilingual, SEO-optimized, mobile optimized, customizable and scalable ecommerce solution. The organization offers several levels of paid support. Operating System: Windows
Powering more than 45,000 online retail sites, Spreecommerce offers modular architecture, customization, responsive site design and more. It's won several awards, and extensive documentation can be found on the site. Operating System: OS Independent
This WordPress plug-in works equally well for developers selling software (or WordPress themes) and regular online retailers. You can extend its capabilities with several paid plug-ins. Operating System: OS Independent
551. Tomato Cart
This mobile-friendly project claims to be "the first open source shopping cart solution designed for offering great user experience for all digital devices. Key marketing features include a banner manager, Google Adsense integration, Web analytics, SEO, email system, catalog management, reviews and ratings, wishlists, "tell a friend," discounts, newsletters and more. Operating System: Windows, Linux
This shopping cart is designed to be used alongside the popular Drupal content management solution. The website says it is a good option for people who want to "build a community around a product, sell access to premium content, [and] offer paid file downloads." Operating System: Windows, Linux, OS X
Highly scalable Vespolina was designed "to grow from a single person store to a multi-national store." It's based on PHP. Operating System: OS Independent
VirtueMart works with the Joomla content management solution and boasts more than 500 features. It's designed to be very easy to use, and the website offers lots of links to live stores so that you can see it in action. Operating System: Windows, Linux, OS X
The self-proclaimed "most popular WordPress eCommerce plug-in," WooCommerce offers a wide variety of themes, plus PayPal integration, multiple shipping options, easy inventory and reporting, marketing capabilities, simplified tax handling and more. Paid extensions and services are avialable. Operating System: OS Independent
Powering more than 55,000 stores, WordPress's eCommerce plug-in promises "everything you need to sell anywhere." Support and premium extensions are available for a fee. Operating System: OS Independent
This is a full-featured enterprise-class shopping cart solution. It also comes in a Pro version and several paid extensions are also available for purchase. Operating System: OS Independent
Now 15 years old, X-Cart handled more than $2.3 billion in transactions from more than 35,000 stores last year. It's PHP-based, and multiple paid versions are available. Operating System: Windows, Linux, OS X
This mature online shopping system includes features like front-end templates, SEO, mobile support, multiple payment and portal options, add-ons and support for multiple languages, including English. Paid support, hosting, and professional and multi-shop versions are available. Operating System: Windows, Linux, OS X
560. Zen Cart
Designed with the needs of shop owners and shoppers in mind, Zen Cart is a customizable ecommerce platform that easily integrates with multiple payment gateways. Paid video training and related services are available. Operating System: OS Independent.
Zeuscart boasts a rich user interface that focuses on Web 2.0 trends. It is designed primarily for small to medium-sized companies. Paid services are available. Operating System: Windows, Linux
This client-server based software makes it easy to give each student a different version of a test because it can pull questions from a pre-established database. It's available in nine different languages. Operating System: Windows, Linux, OS X.
563. Safe Exam Browser
If you're giving a browser-based test (for example, through a learning management system), this tool locks down the student's system so they can't browse the Internet or access other applications while taking the exam. It can be used with student-owned PCs, as well as with school-owned, networked systems. Operating System: Windows.
This computer-based assessment software aims to simplify the creation, delivery and scoring of tests. It's available under an open source license for non-commercial use or with a paid commercial license. Operating System: OS Independent
This project aims at helping medical providers "better document, understand, plan, and manage their patients' health and health care delivery." It's been translated into multiple languages, and the website includes success stories from practitioners who have used it in several different countries. Operating System: Windows, Linux, OS X
This Web-based EHR and practice management solution boasts a modern, intuitive interface. See it in action with the online demo. Operating System: Windows, Linux, OS X
567. GNU Health
An official GNU project, this award-winning application combines EMR functionality with a hospital information system and a health information system. It was designed to comply with industry standards, and it's been adopted by the United Nations University. Operating System: Windows, Linux, OS X
Also known as "Mountain Meadow Medical Records," M is an EMR program that a practice in Virginia has been using for a decade. It offers an intuitive interface and fast performance. Operating System: Windows, Linux, OS X
569. Neuron Health
Built on the Tolven Platform, Neuron is an EHR system created by software company Roberts-Hoffman. It was designed to adapt to provider workflows, communicate with other systems and use the latest technologies. Operating System: OS Independent.
Certified by the Office of the National Coordinator of Health Information Technology, OpenEMR boasts that it is "one of the most popular open source electronic medical records in use today." Commercial support is available through third-party partners. Operating System: Windows, Linux
OpenMRS began as a project to fix the medical record system at a clinic in Kenya and has grown into a leading open source medical record system used around the world, particularly in developing countries. It describes itself as "both just a library of API calls and a database and a default implementation of those API calls in the form of a web application." Operating System: Windows, Linux, OS X
Owned by Medsphere, Open Vista is the open source version of the Veterans Administration's VISTA EHR system. Because the technology has already been used extensively at more than 1500 VA facilities, it's one of the more mature and usable open source EHR's, and users say it compares very favorably with proprietary solutions. Operating System: Windows, Linux
Like OpenVista, WorldVista is also based on the VISTA EHR software developed for the Veterans Administration. It's ONC-ATCB certified, and it adds several modules not included in VISTA, such as pediatrics and obstetrics. Operating System: Windows, Linux
Short for "Zambia Electronic Perinatal Record System," this unique EHR was specifically designed to improve obstetrics care in Africa. It's now been in use in clinics throughout Zambia for five years. Operating System: Linux
Best for preschoolers and toddlers, ChildsPlay is a set of memory matching, letter recognition and simple math games. It also includes a few less-educational activities like puzzles, pong, pacman and billiards. Operating System: Windows, Linux, OS X.
With more than 100 activities, GCompris is huge collection of educational games for children. It can help users learn to read, to tell time, to understand the water cycle, to draw cartoons, to identify different country maps, to play chess and much more. Operating System: Windows, Linux.
KLettres teaches the very youngest computer users to recognize the appearance and sound of letters and syllables. It's also useful for older computer users who are learning a new language, such as Arabic, Czech, Brazilian Portuguese, Danish, Dutch, British English, English, English Phonix, French, German, Hebrew, Hungarian, Italian, Kannada, Hebrew, Hindi Romanized, Low Saxon, Luganda, Malayalam, Norwegian Bokmål, Punjabi, Spanish, Slovak, Ukrainian or Telugu. (Note that in order to use KLettres on Windows, you'll have to download KDE for Windows.) Operating System: Windows, Linux.
Quick! Solve the math problems before the comet kills the penguin. The user can select the appropriate difficulty, whether that's adding numbers zero through three or multiplying and dividing negative and positive integers. Operating System: Windows, Linux, OS X.
579. Tux Paint
An educational option for pre-schoolers, Tux Paint is a simplified drawing program that is extremely easy to use. It includes fun sound effects, a stamping tool, a cartoon mascot and other features designed to appeal to youngters. Operating System: Windows, Linux, OS X.
Known as "the Outlook of Linux," Evolution offers a very familiar interface for joint email, calendar and address book. It's popular among Linux users and integrates with many other open source applications. Operating System: Linux.
Made by Mozilla (the organization behind the Firefox browser), Thunderbird is an email client with an easy-to-use interface with advanced search, security and customization capabilities. A separate project called Lightning adds calendar functionality to make it more like other groupware applications. Operating System: Windows, Linux, OS X
Inker describes itself as "a front-end CSS and HTML email framework and delivery API that will change how you think about one-to-one emails in your company." It handles both coding and delivery. Operating System: OS Independent.
With nearly 600,000 downloads, OpenEMM claims to be the "most successful e-mail software worldwide." It's available on a SaaS basis, as well as on-premise versions. Operating System: Windows, Linux.
This open source e-mail marketing solution was used to send more than 22 billion messages last year. Subscriptions to the cloud-based service start at just $1. Operating System: OS Independent.
With more than 3.2 million users, this Windows-only encryption solution is tremendously popular. Features include password protection, integration with Windows Explorer and support for multiple languages. It can encrypt files stored on your hardware or on a cloud service, including Dropbox, Google Drive and Microsoft OneDrive. Operating System: Windows
This replacement for the standard Unix crypt function uses the Rijndael block cipher version of AES to provide strong encryption. Like Crypt (below), it doesn't have a graphic interface and is best used by those comfortable working from the command line. Operating System: Windows, Linux, OS X
At just 44KB, this is one of the fastest, lightest weight encryption tools available. However, because it's a command line tool, it's best for experienced system administrators or advanced users. Operating System: Windows
Also designed to be small and lightweight, Encrypt is a cross-platform tool with strong encryption capabilities. It aims to be fast and easy to use. Operating System: Windows, Linux, OS X, Android
This command-line tool implements the OpenPGP standard to encrypt email communications. It's utilized by a number of other open source encryption tools. Operating System: Linux.
This is the version of GNU Privacy Guard (GPG) for Windows users. It encrypts fils and email, and paid professional support is available. Operating System: Windows
591. GPG Tools
This app ports GPG for Mac users and is based on MacGPG. Several other encryption-related tools are also on the site. Operating System: OS X.
LUKS stands for "Linux Unified Key Setup," and it encrypts an entire drive. It's useful for hard disk backups and other types of storage that need password protection. Operating System: Linux
This replacement for the Unix crypt allows developers to add a wide range of encryption functions to their code, even if they don't know a lot about cryptography. The Web site contains a list of supported algorithms that are included in the Libmcrypt library. Operating System: Windows, Linux, Unix
This file-based encryption program supports AES, DES, Triple-DES, IDEA, RC4, RC5, CAST-128, BlowFish, SkipJack and other algorithms. Like AxCrypt, it integrates into Windows Explorer for ease of use. Operating System: Windows
Formerly known as Android Privacy Guard (APG), OpenKeyChain ports the OpenPGP encryption tool to Android devices. It allows users to communicate securely and integrates with many email and messaging tools. Operating System: Android
596. Apache OFBiz
Short for "Open for Business," this Apache ERP solution offers a number of capabilities for marketing teams, including advanced ecommerce, catalog management, promotion and pricing management, CRM, content management, and more. In addition, it also includes traditional ERP functionality like accounting, supply chain management, project management, etc. Operating System: OS Independent
Compiere offers features like warehouse management, purchasing, manufacturing, sales, ecommerce, customer service, materials management, order management, financial management and reporting. It's paid professional and enterprise versions are built to be easily deployed on Amazon's EC2 service. Operating System: Windows, Linux, OS X.
598. Dolibarr ERP/CRM
This Web-based ERP solution was created for smaller companies, foundations and freelancers. Partners around the world provide support and other services, including cloud-based hosting. There is also an online marketplace with a variety of add-ons to extend its capabilities. Operating System: OS Independent
This community-run ERP, CRM and supply chain management solution is a fork of an earlier project called ADempiere, which was itself a fork of Compiere. iDempiere, as it is now called, has adopted OSGi standards and continued development on the ADempiere code. A good option for international organizations, it can handle multiple organizations, multiple languages, multiple currencies and multiple accounting formats. It offers tools for materials management, procurement, sales and marketing, manufacturing management, accounting and more. Because it is Java-based, it can run on Linux, Windows or Mac OS X servers; it also requires a PostgreSQL or Oracle database. Operating System: Windows, Linux, OS X, others
This award-winning application includes CRM, production management, supply chain management, product design management, and HR features as well as standard ERP capabilities. In addition to the free download, it's also available on an SaaS basis that has a free pricing tier. Operating System: OS Independent
601. GNU Enterprise
GNU Enterprise contains a host of developer and ERP tools, including human resources, accounting, CRM, project management, supply chain management, and e-commerce features. Its modular design and open architecture make it easy to customize and easy to maintain. Operating System: Windows, Linux, OS X.
Used by organizations like the World Wildlife Federation, Toyota, Cox Communications, Hyundai and Danone, Odoo promises to simplify omnichannel sales. It comes in a free community version or paid enterprise and online versions. Operating System: Windows, Linux.
Openbravo offers specialized ERP software for retailers, as well as a business suite for companies of all types. The open source version can be found on the company's Community Hub; paid professional and enterprise versions are available through its partners. Operating System: OS Independent.
This solution combines ERP and CRM functionality and is designed to help business owners manager their companies more effectively. It has pre-loaded machine images on Amazon EC2 that make it possible to get the software up and running in the cloud in just minutes. Operating System: Windows, Linux.
605. Plazma ERP + CRM
Another solution for SMBs, Plazma includes tools for tracking contacts and accounts, sales and projects, orders and invoices, marketing compaigns, phone calls, meetings and document management. The interface is basic but easy to use. Note that it requires a SQL database in order to run. Operating System: Windows, Linux, OS X
Downloaded more than a million times, project-open offers enterprise-class project management, professional service automation and IT service management capabilities. It has won several awards and has been under development for more than ten years.
The software comes in four different editions. Community is the free standard version designed to meet the needs of small to midsize business. The paid Professional edition adds features like LDAP integration, financial reports and data warehouse, as well as support. The Enterprise edition adds even more, like audit modules, one-time passwords, and SAP integration, and the extended Edition offers the Enterprise features with additional support. Operating System: Windows, Linux
This Web-based ERP solution installs in just minutes and offers a very simple, intuitive interface. It also comes in an enterprise edition that includes technical and development support. Operating System: Windows, Linux, OS X
As you might guess from the name, webERP runs in a browser and provides a wide range of business administration and accounting tools. It offers quite a few features that make it especially suitable for wholesalers, distributors and manufacturing companies. Operating System: OS Independent
609. xTuple PostBooks
Targeted at manufacturers and distributors, xTuple claims to be the "world's #1 open source ERP." It offers multiple editions, including a cloud hosted version. Operating System: Windows, Linux, OS X.
In crisis situations like earthquakes and other disasters, children often get separated from their families. This mobile app makes it easier to collect, share and manage information about these children so that they can be reunited with their families more quickly. Operating System: OS Independent
Still looking for an alternative to Google Reader? If you're tech-savvy enough to deploy it on your own server, Stringer might be for you. It's a "self-hosted, anti-social RSS reader" with no social or sharing capabilities but plenty of keyboard shortcuts. Operating System: OS Independent
Explorer++ extends the capabilities of the standard Windows Explorer with tabbed browsing, an improved interface, keyboard shortcuts, file merge, file split, and customization capabilities. Like the regular Windows Explorer, it also offers drag-and-drop functionality. Operating System: Windows
The KDE file manager, Krusader is a twin-panel commander-style file manager. It boasts extensive support for archived files, advanced search, batch re-naming, file content comparisons and more. Operating System: Linux
Java-based muCommander supports local volumes plus FTP, SFTP, SMB, NFS, HTTP, Amazon S3, Hadoop HDFS and Bonjour. It makes it easy to quickly move and rename files and also includes compression capabilities. Operating System: Windows, Linux, OS X.
Nautilus, the file manager for the Gnome desktop, is available for most Linux distributions. The intuitive interface should feel familiar to anyone who's ever used a file manager. Operating System: Linux
616. ANts P2P
Designed for security and privacy, ANts P2P encrypts everything you send or receive over the network and masks connections so that users are untraceable. It's Java-based, so it will run on most platforms. Operating System: OS Independent.
Very recently updated, Ares is a BitTorrent client and chat program that allows users to share images, audio, video, software and documents. It includes a built-in player and a library organizer. Operating System: Windows.
This Windows client for the Direct Connect/Advanced Direct Connect file-sharing network has been downloaded millions of times. The site includes a helpful tutorial and beginner's guide for those who aren't sure how P2P works. Operating System: Windows.
eMule claims to be one of the most popular peer-to-peer file-sharing clients available. It can download torrents and offers fast performance and search. Operating System: Windows, OS X.
FrostWire is a combination BitTorrent client, YouTube downloader and media player. It also supports Android devices, so you can take your media files with you on the go. Operating System: Windows, Linux, OS X, Android.
With most file sharing apps, you open up your files to the entire Internet, but with RetroShare, you share files and communicate only with trusted friends. It lets you set up your own secure file-sharing network and offers features like encrypted and communications and strong authentication. Operating System: Windows, Linux, Unix, BSD
622. Shareaza P2P
This Windows peer-to-peer client offers support for multiple networks including EDonkey2000, Gnutella, BitTorrent and Gnutella2. Key features include global searching, multiple results tabs, previews, user comments, ratings, skinnable interface, sophisticated file-hashing and block lists to enhance security. Operating System: Windows.
If you combined Dropbox and Bittorrent, the result would be something like Sharefest. It allows you to share files with anyone without storing them in the cloud. The link above takes you to the actual service, but you can find the source code on GitHub. Operating System: OS Independent
One of the most popular BitTorrent clients, Vuze makes it easy for novices to get started downloading hi-def video while offering plenty of features for advanced users. Operating System: Windows, Linux/Unix, OS X
A good option for UNIX administrators, Connectbot is a SecureShell (SSH) client that allows users to manage simultaneous SSH sessions, create secure tunnels, and copy/paste between other applications. If you search for the app on Google Play, you'll also find a fork that updates some of its capabilities. Operating System: Android
FileZilla also offers clients for SFTP, FTP, SCP and FTPS file transfer. In addition, there's a Windows-only version that will allow you to set up your own FTP server. Operating System: Windows, Linux, OS X.
This Firefox add-on has been downloaded more than 33 million times. It allows you to download files via FTP or SFTP right from your browser window. Operating System: Windows, Linux, OS X
Award-winning WinSCP can transfer files securely via SFTP, SCP or FTPS (and it also includes an FTP client for transferring files without security). It includes two different interface choices. Operating System: Windows.
This app boasts that it can help students learn just about any type of information, whether they are learning a new language, studying for medical exams or trying to remember guitar chords. It comes in iOS and Android versions, making it ideal for learning on the go. Operating System: Windows, Linux, OS X, iOS, Android.
If you need to memorize something—anything—Genius can help. It's a spaced repetition flashcard program that can help you pass a test, master a subject, prepare for a speech and more. Operating System: OS X
Very similar to FlashQard, Java-based jVLT also uses the Leitner method to help students master concepts. However, this app focuses primarily on vocabulary, making it ideal for students who are studying a foreign language. Operating System: Windows, Linux, OS X
One of the better flashcard apps available, Mnemosyne was born from a research project that is studying the nature of long-term memory. It supports multiple card formats and uses an algorithm to determine which card should appear next. Users who choose to do so can upload their progress anonymously in order to provide data for the research team. Operating System: Windows, Linux, OS X, Android/
In addition to traditional flashcards, Parley also utilizes anagrams, multiple choice, fill-in-the-blank, synonym/antonym and other types of tests to improve your vocabulary. Many user-created card sets are available at KDE for Windows. Operating System: Windows, Linux
Java-based Pauker lets you take your flashcards with you on almost any device. Like many of the other apps in this category, it uses the Leitner method of flashcard presentation to strengthen your ultra-short-term, short-term, and long-term memory. Operating System: OS Independent
Designed to be useful for advanced students and beginners alike, Zkanji is a Japanese dictionary and flash card system. It also includes an animated kanji stroke order tool for learning to write the characters. Operating System: Windows
ZWDisplay is especially good at teaching users to read and understand Chinese text. It uses a system based on the book Chinese Through Tone & Color by Nathan Dummitt. Operating System: Linux
If you need to examine a drive in detail, The Sleuth Kit is a set of command-line tools for digital analysis, and Autopsy Browser provides a graphical interface for using those tools. The same team is also working on Sleuth Kit Hadoop Framework, a cloud-based tool for analyzing many drives very quickly. Operating System: Windows, Linux, OS X.
638. 0 A.D.
This historical real-time strategy game allows players to lead their own ancient civilization. It's won several awards, boasts realistic historical details and includes a map editor. Operating System: Linux, Windows, OS X.
This simple puzzle game is surprisingly addictive. Move numbers around the grid until the numbers combine to hit 2048. Run out of moves and your turn is over. Operating System: Online, iOS, Android.
Built "in the tradition of the Battle Isle series," ASC is a turn-based strategy game with 2D graphics and an overhead view of the action. You can expand the basic game with one (or more) of the many user-created maps available on the website. Operating System: Windows, Linux.
641. Alien Arena
According to its website, this sci-fi-based shooter "features immersive arenas, freaky and violent weapons, and a vibrant community." It's tremendously popular with plenty of game servers, fan sites and tournaments available online. Operating System: Linux, Windows, OS X.
This PC and Android game features "roller coasters from hell that we travel at full speed in a barrage of explosions." There are 25 main levels, plus boss fights, and you can earn access to 18 more levels by getting a high score. Operating System: Windows, Linux, Android.
643. Armagetron Advanced
An "old school arcade game slung into the 21st century," Armagatron Advanced is a 3D take on the Tron light cycle game from the 80s. Up to sixteen people can play at once, against each other and/or the AI. Operating System: Windows, Linux, OS X, Android.
AssaultCube offers extremely realistic settings but is lightweight and low latency, making it a good option for players with underpowered systems or poor connection speeds. It includes twelve different multiplayer modes and 26 different maps, plus a map editor so you can create your own. Operating System: Linux, Windows, OS X.
645. AssaultCube Reloaded
This fork of the popular first-person shooter integrates some of the best features of Battlefield, Quake and Call of Duty into AssaultCube, while maintaining a lightweight footprint. Other improvements include ricochet shots, new weapons, improved radar and more. Operating System: Windows, Linux
646. Battle for Wesnoth
Those who enjoy high fantasy will like this turn-based tactical strategy game that features elves, dwarves, orc, mermen and many other races. Play against up to eight other players in multiplayer mode. Operating System: Linux, Windows, OS X, iOS.
Designed to help pool players practice when a real table isn't available, Billiards has a very lifelike physics simulator. It includes both pool and billiards tables and can play eightball, nineball and carom. Operating System: Linux.
Customize your starship and battle against enemies in this "fast-paced team-based outer-space multi-player arcade game." Several online servers are available. Operating System: Windows, Linux, OS X, Android.
Many real-time strategy games are set in the past, but Bos Wars is set in the future. Both single- and multi-player games are available. Operating System: Windows, Linux, BSD, OS X.
650. Brain Workshop
Research suggests that dual n-back activities can improve working memory and fluid intelligence, and they also seem to help some ADHD/ADD sufferers. Downloaded more than 384,000 times, Brain Workshop lets you give your brain a workout by trying dual n-back exercises for yourself. Operating System: Windows, Linux, OS X
Short for "Battle Zone Capture the Flag," BZFlag is a 3D multiplayer online tank game with retro graphics. It gets hundreds of downloads every week, and there's a tremendous amount of help on the website for new players. Operating System: Windows, Linux, OS X.
A rogue-like adventure game, Cataclysm is set in the first days after an apocalypse. Players must find food, shelter, water and defense while battling zombies and other horrors. Operating System: Windows, Linux, OS X.
653. Chaotic Rage
This self-described "silly zombie shooter game," features tanks, boats, helicopters, trains and, of course, zombies. You can view the action from the top down, in first-person or in third person, and you can play alone or with friends. Operating System: Windows, Linux, OS X, Android.
654. Chromium B.S.U.
This vertically scrolling shooter game invites you to pilot the cargo spaceship Chromium BSU through a maze of enemy fighters, attempting to destroy them before they destroy you. It's fast-paced and hard enough that most games don't last longer than fifteen minutes. (Note that this game doesn't have anything to do with Google's Chromium project.) Operating System: Windows, Linux.
655. Classic Nexuiz
Downloaded millions of times, the classic version of Nexuiz has been beloved by many generations of gamers. Note that this is the older open source version, but there is also a newer paid version. Operating System: Windows, Linux, OS X.
656. Code Combat
Suitable for ages 9 and up, Code Combat is a multi-player game that teaches players how to code. You can play online through the website or download it from GitHub. It offers more than 110 free levels, and tutorials and other levels are available with a subscription. Operating System: OS Independent
Forked from Boswars, this real-time strategy game is set in Stalinist Russia. Build up your economy and army quickly so that you're ready for the eventual Nazi attack. Operating System: Windows, Linux.
This old-school dungeon crawler invites players to explore a fantasy world, battle monsters, master magic and uncover treasure. The graphics are extremely simplistic, but the world is large with 3,000 different maps, 150 monsters, 13 races and 15 different types of characters to play. Operating System: Windows, Linux, OS X.
659. Cube Trains
Build elevated trains on a city grid with this puzzle game. A paid expansion pack ads 11 more levels. Operating System: Windows, Linux, OS X.
Domination is a modified version of the board game Risk for PCs and mobile devices. Several different maps are available, and it has a multi-player option. The mobile versions are available through Google Play or the Amazon Appstore. Operating System: Windows, Linux, OS X, Android, Blackberry.
This game describes itself as "A roguelike adventure through dungeons filled with dangerous monsters in a quest to find the mystifyingly fabulous Orb of Zot." You can download the game and play alone or access one of the many online game servers. Operating System: Windows, Linux, OS X, Android.
This 3D dungeon-crawler challenges players to save Lord Bishop from the clutches of the evil Dracolich, slaying hordes of monsters along the way. Play with up to four other people as you make your way through 40 different dungeons. Operating System: Windows, Linux, OS X
The latest version of this classic puzzle game, released last December, adds 51 new levels to the thousands already available. It's extremely popular and highly praised for its addictive gameplay. Operating System: Windows, Linux, OS X.
664. Epic Inventor
Epic Inventor is a side-scrolling role-playing game with multiple levels. It has been compared to Minecraft, except that the emphasis is on crafting items instead of on building. Operating System: Windows, Linux.
This epic adventure puts you in the shoes of a futuristic space traveler suddenly transported to King Arthur's court in Camelot. It includes 42 solo-play levels and 27 multiplayer levels. Operating System: Windows, Linux, OS X.
666. Extreme Tux Racer
This updated version of the classic Linux game Tux Racer features Tux the Linux penguin sliding down a mountain on his belly just like the original. Race your friends to see who can achieve the fastest time. Operating System: Windows, Linux, OS X.
667. Fish Fillets NG
More than a decade old, this puzzle game challenges players to help two fish escape from increasingly difficult levels. It's a remake of an older ALTAR interactive game. Operating System: Windows, Linux, OS X.
In this action-adventure game, players must battle against multiple enemies as they make their way through various landscapes. They interact with other players, collect items in the inventory and master various skills. Operating System: Windows, Linux, OS X.
This top-notch flight simulator is so realistic it can be used to help with pilot training, industrial engineering or research. The basic software is free, but you can purchase additional aircraft and scenery (as well as mugs and T-shirts) from the website. Operating System: Windows, Linux, OS X, others.
In this turn-based strategy game, play starts in America in 1942, and you win if you eventually declare independence from Britain and survive the Revolution. It's very similar to the games Colonization and Civilization. Operating System: Windows, Linux, OS X.
Inspired by the game Civilization, FreeCiv is a turn-based multi-player strategy game where players must guide their tribes from the stone age to the space age. It's a mature game with plenty of online help available for new players. Operating System: Windows, Linux, OS X.
Freedoom is based on the Doom engine, but adds free content. It offers plenty of action, and it is compatible with mods created for the original Doom. Operating System: Windows, Linux, OS X, Android.
If you're feeling nervous about Microsoft's purchase of Minecraft, check out Freeminer. Very similar to Minecraft, this game features a nearly infinite world where players can dig and build whatever they can imagine. Operating System: Windows, Linux, OS X.
Built in "the tradition of the Master of Orion games," FreeOrion is an empire-building strategy game set in the reaches of space. Play against the AI or against other humans in multiplayer mode. Operating System: Windows, Linux, OS X.
675. Frets on Fire
You can think of Frets on Fire as an open source version of Guitar Hero that you can play with a guitar controller or your keyboard. It can play Guitar Hero songs or the many songs created by the community, or you can create your own songs with the built-in editor. Operating System: Windows, Linux, OS X.
676. Frozen Bubble
This classic Linux game has spawned an entire genre of similar games. This version offers more than 100 levels, multiplayer support and a level editor. Operating System: Windows, Linux.
677. Gang Garrison 2
Gang Garrison 2 is a 2D "demake" of Team Fortress 2. It has received rave reviews and has been downloaded more than 130,000 times. Operating System: Windows.
For players of all ages, GBrainy offers logic puzzles, mental calculation, memory trainers and verbal analogy games. It's goal is to help users stay sharp mentally. Operating System: Windows, Linux.
In this real-time strategy game, the armies of Tech and Magic war against each other. It has won several awards and inspired many other games, including MegaGlest (see below). Operating System: Windows, Linux.
|Best Open Source Software for Windows 10|
|Open Source Replacements for Windows XP|