"Roughly inspired by" Visio, Dia is a basic drawing program that's great for creating org charts, network diagrams, flowcharts and other simple diagrams. It doesn't have as many bells and whistles as Viso, but it's very good for small businesses that need to create charts only occasionally. Operating System: Windows, Linux, OS X.
Gimp is a professional-quality photo manipulation tool with a full feature set that rivals Photoshop. It's a very good choice for small businesses creating their own websites, brochures, reports, sales flyers and other materials. Operating System: Windows, Linux.
Like Gimp, Inkscape is suitable for use by professionals, but it is a vector graphics program rather than a photo editing tool. Use it to create logos and other simple artwork or to edit existing clip art. Operating System: Windows, Linux, OS X.
Used by organizations like Lufthansa, Sandals, Red Hat and Stanley/Black & Decker, Orange calls itself the "world's most popular HR software." It comes in open source, professional (meant for SMBs) and enterprise versions. Operating System: Windows, Linux, Unix, OS X.
Designed by experienced HR managers, Waypoint aims to be secure, flexible and easy to use. It comes in a free community download or in a subscription-based cloud version. Operating System: OS Independent.
45. Simple Invoices
This Web-based invoicing solution makes it easy for small organizations to send PDF invoices and track finances. Host it on your own Web server or use one of the service providers listed on the site. Operating System: OS Independent.
Another Web-based invoicing option, Siwapp allows users to create professional-looking, secure invoices with a minimum amount of hassle. Check out the screenshots and demo on the site to get a feel for how easy it is to use. Operating System: OS Independent.
Replaces: Microsoft Word
Similar to Microsoft Word, AbiWord is a word processing program that can open and save .doc files. The latest versions include a number of collaboration features. Operating System: Windows, Linux, OS X.
Replaces: Microsoft Office
Formerly known as KOffice, this office suite for the KDE desktop includes Words (word processor), Sheets (spreadsheet), Stage (presentations), Plan (project management), Krita (drawing and painting), Kexi (database), Karbon (vector graphics), Flow (diagramming) and Braindump (mind mapping). It can import and export Microsoft Office documents, and it has a very easy-to-use interface. Operating System: Windows, Linux.
Replaces: MindJet MindManager
This mind mapping tool is like a whiteboard for your computer. It's great for brainstorming sessions and for organizing many different kinds of information. Once you try it, you'll likely find lots of different uses for it. Operating System: OS Independent.
Replaces: Microsoft Excel
Free, fast and accurate, Gnumeric is an intuitive spreadsheet application that can import and export files from many similar programs, including Excel. The online user manual has a wealth of information to help both beginners and advanced users. Operating System: Windows, Linux.
Replaces: Microsoft Office
Forked from OpenOffice (see below), LibreOffice has quickly become extremely popular among Linux users. Like its predecessor it offers Microsoft-compatible word processor (Writer), spreadsheet (Calc), presentation (Impress), database (Base), graphics (Draw) software and math formula editing (Math) software. Operating System: Windows, Linux, OS X.
Replaces: Microsoft Office
Downloaded more than 100 million times, OpenOffice is a very popular office productivity suite that offers the same applications as LibreOffice (see above). Because it can open and save to Microsoft file formats it's a good option for small businesses who don't want to purchase Microsoft Office. Operating System: Windows, Linux, OS X.
Working with PDF files can be frustrating for small businesses that don't want to spend money on the full Adobe Acrobat package. PDFCreator offers an easy way to create, merge, encrypt, sign and make small changes to PDF files. Operating System: Windows.
A good choice for technically savvy users, the Debian distribution of Linux comes with more than 37500 packages of pre-compiled software. It's popular among long-time Linux users and has been used as the foundation for many other Linux distributions.
Many larger businesses run Red Hat EnterpriseLinux, but Red Hat requires a subscription fee. Fedora is the open source version of the same software, and it does not require a support subscription.
56. Linux Mint
If you're looking for a very user-friendly version of Linux for a desktop computer, Linux Mint is a great option, and has recently been growing in popularity. It offers four different interface options, including a couple that should feel very familiar for Windows XP users who don't want to upgrade to Windows 8.
Like Red Hat, Novell's SUSE is very popular with large enterprises, and it also requires a support subscription. OpenSUSE, which comes in both desktop and server versions, is the free, community-supported version of SUSE.
By most counts, Ubuntu is the most popular desktop distribution of Linux, and it also comes in server and cloud versions. It's fast and easy to use, and it comes with thousands of free applications built in.
This POS solution integrates with Openbravo's other business software. It runs on touchscreens and supports standard receipt printers, displays and scanners. Operating System: Windows, Linux, OS X.
Downloaded more than 130,000 times last year alone, this easy-to-use point of sale solution boasts that users can get it up and running in minutes. It works for retail establishments of all kinds and includes extensions for restaurants and bars. Operating System: Linux.