785. AdBlock Plus
Used by more than 12.5 million Firefox users, AdBlock Plus can be configured to block all advertisements or only those originating from domains known to install malware. To use it, you'll also need to subscribe to one of the filters that provide the type of blocking you desire. Operating System: Windows, Linux, OS X
787. HTTPS Everywhere
Many websites have the ability to encrypt traffic via HTTPS, but don't turn on that feature by default. This Firefox add-on, a collaboration between the Tor Project and the Electronic Frontier Foundation, rewrites requests so that you will automatically use HTTPS whenever it is available. Operating System: OS Independent
Like Tor, JAP hides your IP address while you're browsing online. However, because it is a research project, the service occasionally experiences outages and downtime. Operating System: OS Independent
Available in both client and server versions, Mixmaster is a remailer that protects you from traffic analysis. With it, you can send e-mail anonymously or under a pseudonym. Operating System: Windows, Linux
Another anonymous remailer, Mixminion passes e-mail through a network of servers that mixes them up and encrypts them in order to protect privacy. It hasn't been updated in a while, but a stable version is available. Operating System: Windows, Unix, OS X
This Firefox add-on from W3C (the World Wide Web Consortium) alerts you to the data being collected by the various websites you visit. Users also have the option of contributing to a project that is tracking how websites are doing at protecting users' privacy. Operating System: OS Independent
This non-caching Web proxy server offers advanced filtering capabilities for removing ads and protecting your privacy. You can use it to protect an individual PC or an entire network. Operating System: Windows, Linux, OS X.
This site scans your Facebook settings and alerts you to data which you may have unintentionally made public. It's still a good idea to check your privacy settings manually, but this tool gives you a good second check to make sure you haven't divulged personal information that you didn't want to make public. Operating System: OS Independent
This Firefox add-on helps prevent websites from accessing your browsing history. It works with your cookie settings to apply your desired level of privacy. Operating System: Windows, Linux, OS X
796. Web of Trust (WOT)
Downloaded more than 23.5 million times, Web of Trust rates websites based on their reputation. While you're browsing, sites with a good reputation will show up with a green circle, bad sites get a red circle, and those in between will look more orange or yellow. Operating System: Windows, Linux, OS X
Recently developed by Google, Go aims to make developers more productive by providing them with a clean, simple programming language. And unlike many older languages, it offers garbage collection and parallel computation. Operating System: Linux, OS X
Originally developed by Sun but now owned by Oracle, Java allows developers to write code that will run on multiple operating systems. According to Tiobe, it's the most popular programming language in the world. The link above offers extensive help for those new to the language and a large collection of tools for Java developers. Operating System: Windows, Linux, OS X
Perl has been around for 22 years and runs on more than 100 different platforms. It's an ideal Web programming language and integrates easily with popular databases. Operating System: Windows, Linux, OS X
This general purpose scripting language is particularly suited to Web development, enabling developers to write dynamically generated pages quickly. A lot of its syntax comes from C, Java and Perl, and it can be embedded into HTML. Operating System: Windows, Linux, OS X
Python's strengths are its speed, flexibility and readable syntax. It's often used in Web development but can be used for other types of applications as well. Operating System: Windows, Linux, OS X
R is both a programming language and an environment for developing statistics and graphics applications. It's very similar to the commercially developed S language. Operating System: Windows, Linux, OS X
Designed to feel "natural," Ruby's creator Yukihiro “matz” Matsumoto blended parts of Perl, Smalltalk, Eiffel, Ada, and Lisp to create a new language that's been called both "handy" and "beautiful." It's ranked as the tenth most popular programming language in the world, due in no small part to the popularity of the Ruby on Rails framework. Operating System: Windows, Linux, OS X
Designed for medium-sized organizations, Acheivo combines calendar, contacts, project management, time tracking and basic CRM and human resources management capabilities. It's Web-based, and the site offers a demo so that you can try it out before you download. Operating System: OS Independent.
For Agile, Scrum or Kanban development teams, Digaboard is a digital version of your project whiteboard. Unlike a traditional white board, it saves everything you've done and you can access it from the Web, making it a good choice for geographically dispersed teams. Operating System: OS Independent.
This Web-based app offers an e-mail based trouble ticket system, client/company management, project listings, hierarchical task list, file repository, contact list, calendar, discussion forum and resource-based permissions. To see it in action, check out the demo on the site. Operating System: Windows, Linux.
Like OpenProj, GanttProject can also import and export from Project. As you would expect from the name, it creates Gantt charts, and it also creates PERT charts, generates reports and exports data to spreadsheet formats. Operating System: Windows, Linux, OS X.
As the name suggests, this Web-based project management system was originally created for the ship building industry, but its features make it useful for just about any industry. It helps organizations schedule resources, control costs, organize tasks and monitor progress, and it connects with many ERP systems. Operating System: Linux.
This cloud-based invoicing, project management and CRM solution was designed to help freelancers and small businesses manage their client interactions. You can run it on your own server for free or use the SaaS version called Ofuz Online. Operating System: OS Independent
810. One point
Onepoint aims to combine a powerful set of features with an easy-to-use interface. It's available in a variety of editions: Basic and open editions are available with a free, open source license. Professional, master, group, and enterprise editions require a paid, commercial license. Operating System: Windows, Linux, OS X
Downloaded more than 1.25 million times, OpenProj was specifically designed to replace Microsoft Project, and it opens both Project and Primavera files. Key features include Gantt charts, network diagrams (PERT charts), WBS and RBS charts, earned value costing and more. Operating System: Windows, Linux, OS X.
812. openXprocess The app offers addresses the needs of process engineers, project managers and project participants. It imports from Microsoft Project and includes a number of features designed to meet the needs of Agile and Scrum teams. Operating System: Windows, Linux.
PHPProjekt combines project management with a time tracker and some groupware functions, like a calendar, to do list and contact manager. It's Web-based, and the site provides a helpful demo so that you can see the features in action. Operating System: OS Independent.
Plandora meets the needs of a variety of kinds of teams with Gantt charts, a Balanced Scorecard view and an Agile development board. In addition, the latest release includes cost management, artifact management and new gadgets. Operating System: OS Independent.
Web-based Redmine offers Gantt charts, calendar, per-project wikis, an issue tracker, newsfeeds and more. It also integrates with most version control systems, making it a good choice for development teams. Operating System: OS Independent.
TaskJuggler calls itself "project managers' delight" and includes tools for project scoping, resource assignment, cost and revenue planning, and risk and communication management. It's designed for "serious project managers" and takes some effort to learn. Operating System: Windows, Linux, OS X.
Offering "real project management for real business," this Web-based tool can manage multiple projects, companies, departments and users. Key features include a modular infrastructure, built-in security, role-based permissions, project- and group-wide Gantt charts, and group calendar. Operating System: OS Independent.
Designed for development teams, this Java-based app includes project management, bug tracking and time tracking capabilities. It supports Agile methodologies and it can export to multiple formats, including Microsoft Project. Operating System: OS Independent.
819. Onepoint Project
Onepoint combines project management with project portfolio management capabilities, including supporting formal, Agile and JIRA projects within a single solution. The Basic and Community editions are available with a GPL license, while the supported editions for enterprise users have a proprietary license. Operating System: Windows, Linux, OS X.
The first open source solution to be included in Gartner's "Magic Quadrant for IT Project and Portfolio Management Applications," Project.Net is a robust, but affordable alternative to commercial PPM software. It integrates with many BI systems, includes advanced social networking features and commercial support and services are available. Operating System: OS Independent
If you're running a hotel, car rental company or a craft fair, SpaceBooker can help you keep track of reservations. It works both on- and offline, and it gives you a number of different views, including a graphical map, so that you can see what's reserved and what's available for various dates. Operating System: Windows.
This Bible study tool includes text from more than 200 free Bible texts and commentaries available through the Crosswire Bible Society. The interface is easy to use and it includes a helpful search capability. Operating System: Windows, Linux, OS X
It already does everything else--now your computer can help you meditate. Using something called the “binaural beat principle,” Gnaural generates audio tones designed to get you in the right frame of mind for relaxation. Operating System: Windows, Linux, OS X
Noor doesn’t offer a lot of bells and whistles, but it does let you access the text of the Quran from your PC. It includes both the original Arabic and translations. Operating System: OS Independent
Like BibleTime, Xiphos offers access to hundreds of free Bible study tools. The tabbed interface makes it easy to cross-reference different texts, and Xiphos also allows you to create your own modules for journaling, prayer lists or writing your own commentary. Operating System: Windows, Linux
Zekr provides a searchable version of the Qur'an in Arabic and 20 other languages. You can read it yourself or have Zekr read it aloud for you. Operating System: Windows, Linux, OS X
This TightVNC fork allows you to view and interact with your computer from your Android phone. Obviously, it's tough to do a lot of work from your phone, but it is useful for short and simple tasks. Operating System: Windows, Linux
Based on Back Orifice, BO2K provides file-synchronization and remote operation capabilities for network administrators. Unlike most commercially available products, it's small, fast, free, and very extensible. Operating System: Linux
Developed by the OpenBSD project, OpenSSH offers a set of SSH, SCP, and SFTP tools for secure remote access and file transfer. It encrypts all traffic, including passwords, to make hijacking nearly impossible. Operating System: Linux, Unix, BSD
Downloaded more than 3 million times, this popular open source SSL VPN solution makes it possible for remote workers to access your corporate network securely. It's also available with commercial support or as a cloud-based solution. A number of other client front-ends are also available. Operating System: Windows, Linux, OS X
This basic telnet/SSH client offers remote access for most Windows and Unix systems. Note that it does not support Vista. Operating System: Windows, Unix
With TightVNC, employees can control their work computers while they are at home or traveling. It's lightweight and fast and conforms to RFB protocol specifications. Operating System: Windows, Linux
UltraVNC provides similar functionality as TightVNC. Key features include file transfer, video driver, optional encryption plugins, text chat and multiple-monitor support. Operating System: Windows
While it's not a true VPN tool, Zebedee does provide secure IP tunneling for TCP/IP or UDP data transfer between two systems. It not only provides security against snoopers, its compression capabilities save on network bandwidth. Operating System: Windows, Linux, Unix
Designed to help researchers take notes and track bibliographic information, WIKINDX can be used by a single user or stored on a Web server for access by a team working together. It exports bibliographies in a variety of style guide formats, allows multiple attachments per resource and supports non-English characters. Operating System: OS Independent
Zotero is a Firefox plug-in that makes it easy to track and cite your sources when doing research on the Web. It also includes a "Groups" feature that allows you to share your research with a team. Operating System: OS Independent
837. The Player Project
More middle and high school are offering classes in robotics, and The Player Project provides some of the software that supports instruction in robotics. It includes Player, a network server for robot control; Stage, a 2D multiple robot simulator; and Gazebo, a 3D multiple robot simulator with dynamics for simulating outdoor environments. Operating System: Linux, Unix.
Short for "Robot Operating System," ROS offers a set of open-source libraries for controlling robots. It includes device drivers, libraries, hardware abstraction and other capabilities. Operating System: Linux, OS X
Vyatta's software and appliances offer enterprises an alternative to expensive networking hardware from companies like Cisco. The core software is available as an open source download, or you can purchase hardware, supported software or services from Vyatta. Operating System: Linux
With FREESCO you can set up an Ethernet bridge or router, a dial-up or leased line router, or a http, dns, ftp, ssh, or print server. It also includes the standard Linux firewall and NAT to help protect your network. Operating system: Linux
FeedReader offers robust news aggregation while keeping the interface basic enough for novices to use. Upgrades to the FeedReader Connect and FeedReader OEM products are available for a fee. Operating System: Windows
842. RSS Owl
One of the most popular feed readers available, RSS Owl aggregates headlines from all of your favorite media sites and makes them easy to browse. It has a ton of advanced features, like saved searches, news filters, labels, and news bins that set it apart from other similar apps. Operating System: Windows, Linux, OS X
Class describes itself as "a student information management system turned on its head." It takes a more teacher-centric approach, making it easy for classroom instructors to input information and access data about their students. Operating System: OS Independent
This newer SIS is completely Web-based and designed to make it as easy as possible to comply with state reporting requirements. It also streamlines attendance taking, scheduling, grading, and other administrative tasks. Operating System: OS Independent
OpenAdmin's interface isn't particularly fancy, but it does provide a wide range of features for tracking grades, attendance, schedules, discipline, fees, IEPs and more. It was designed to meet the needs of both public and Catholic schools. Operating System: OS Independent
This app includes all of the same features you would find in a much more expensive commercial SIS—demographics, contact information, scheduling, gradebook, reports, attendance, transcripts, health records, a parent portal, etc. The free community version is suitable for small or medium-sized schools with IT staff, and it's also available in commercially supported versions for individual schools and school districts. Operating System: Windows, Linux
Canonical's Edubuntu and the One Laptop Per Child project both include SchoolTool as their school administration program. It offers an online gradebook, calendar, attendance, competency tracking, demographics and contacts. Operating System: Linux
If you have a great idea for a movie or a TV show, Celtx can help you format your screenplay properly, storyboard scenes and sequences, sketch setups, develop characters, breakdown and tag elements, schedule productions, and more. According to its owners, it’s "the world's first all-in-one media pre-production system." Operating System: Windows, Linux, OS X
849. SEO Panel
Released in 2010, this app describes itself as the "world's first seo control panel for multiple websites." Key features include an automatic directory submission tool, keyword position checker, site auditor, Google and Alexa rank checker and more. Operating System: OS Independent
In addition to its networking and security gateway features, ClearOS acts as a groupware and mail server with support for Microsoft Outlook. The paid supported versions of the software and the pre-configured appliances from the Clear Foundation add other features useful for small businesses. Operating System: Linux.
This all-in-one platform combines a communications server with a security gateway, backup, network monitoring, infrastructure management, file server, Web server and more. In addition to the basic, free edition, it also comes in paid professional and enterprise versions, with other add-ons available as well. Operating System: Linux
Need some motivation to help you stop smoking? Quit Count adds up how much money you've saved and how much time you've added to your life expectancy. Operating System: Linux
853. No Smoke Counter
Like QuitCount, the No Smoke Counter tracks your money saved by not smoking. However, this version is designed for your smartphone, so you can take it along with you. Operating System: OS Independent
Version 1.0 of this eBay-owned SOA platform was released in May of 2011. It's Java-based, standards-based and offers quality-of-service features, monitoring capabilities, a repository library, a type library, an error library, local binding and more. Operating System: OS Independent
Made by the WordPress team, BuddyPress offers "social networking in a box." Its used by thousands of organizations to create social networks for a variety of different groups. Operating System: OS Independent
Launched as an alternative to Facebook, this open source social network has a long way to go to catch Facebook's user base. It offers greater control over your privacy and content. You can sign up to join a current Diaspora hub or create your own Diaspora server using the information from the site. Operating System: Windows, Linux
857. LiveStreet CMS
Similar to BuddyPress, LiveStreet is a content management system for creating blogs or social networks. It boasts easy installation, extensibility and multilingual functionality. Operating System: Linux
858. Pligg CMS
Pligg describes itself as "social publishing" software; that is, it creates websites that invite users to submit their own content and/or vote on current content. Hosting is available through several third-party partners. Operating System: Windows, Linux
Storyltr brings together all of your Web 2.0 posts from up to 18 different services, including Twitter, Flickr, StumbleUpon, Tumblr and others. It lets you tell the story of your life in your own way. Operating System: OS Independent
Although not as human-sounding as some other text readers, eSpeak provides clear audio of the text on your screen. It supports dozens of different languages, as well as several different English accents. Operating System: Windows, Linux, OS X
If you'd like to be able to talk to your computer, check out Simon. It accepts voice commands and turns audio into text. Operating System: Windows, Linux
Based on BSD, this app allows you to create network attached storage for sharing files across Windows, OS X, Linux and Unix-like systems. Key features include a Web-based interface, the Zettabyte File System, snapshots, thin provisioning and more. Operating System: FreeBSD
Downloaded more than 250,000 times, Openfiler offers both file-based Network Attached Storage and block-based Storage Area Networking. Key features include volume-based partitioning, iSCSI (target and initiator), scheduled snapshots, resource quota, and a unified interface for share management. Operating System: Linux