7-Zip is an file archiver program for windows. It supports packing and unpacking of 7z, ZIP, GZIP, BZIP2 and TAR format files and provides a better compression ratio than WinZip for ZIP and GZIP formats.

AbiWord is a word processor lighter and quicker than OpenOffice's Writer. It's compatible with Microsoft Word documents and OpenDocument Format too. ( open source)

Ardour is a digital audio workstation that you can use to record, edit and mix multi-track audio. It also allows you to produce CDs and mix video soundtracks, and it's great for testing out new ideas about music and sound. (open source)

Art of Illusion is a free, open source 3D modelling and rendering studio. It is written entirely in Java, and should be usable on any Java Virtual Machine. (open source)

Audacity is open source software for recording and editing sounds. It is a solid cross-platform sound editor supporting mulitple formats with an intuitive graphic user interface. (open source)

BasKet Note Pad ... This nifty little app lets you take notes, add images, links etc on the fly you can then organise notes, tag them and quickly retrieve them for future reference. ( open source)

BBPress comes from the creators of Wordpress, it is forum software with a focus on web standards, ease of use, ease of integration, and speed.

Bean is a small, easy-to-use word processor (or rich text editor), designed to make writing convenient, efficient and comfortable. It was built for Mac OS X. ( open source)

Blender is a solid and respected 3D content creation suite, available for all major operating systems and distributed under GPL licensing. Create models, shade, animate and make interactive 3D. (open source)

CDex is a tool that enables you to extract digital data directly from an Audio CD into plain WAV files (useful for making compilation audio CDs) or compressed using an audio encoder. (open source)

Drupal is an open source content management platform with a powerful range of features that supprt a variety of websites from personal blogs to large community-driven websites.

emailSTRIPPER. is a free program for cleaning the ">" and other formatting characters out of your emails. It will restore "forwarded" or "replied" emails back to their original state so they're easier to read.

FreeMind is a free mind-mapping program written in Java. You can use it to keep track of projects, to set up a workplace for your PC but also for the Internet, it's also good for essay writing and brainstorming. ( open source)

Google Pack is Google's freely distributed software bundle that includes: Google Earth, Picasa, Firefox, Adobe Reader, Skype, Star Office and more.

GTDInbox is a Firefox extension that integrates the highly effective methodology of "Getting Things Done" into the popular email service Gmail.

Habari is a "next-generation free software blogging patform" still in development but backed by some of the web's most respected coders and developers. Habari will grow to be something special.

Hydrogen is an advanced drum machine for GNU/Linux. It's main goal is to bring professional yet simple and intuitive pattern-based drum programming. (open source)

Inskscape is a great vector graphics editor, with capabilities similar to Illustrator, CorelDraw, or Xara X, using the W3C standard Scalable Vector Graphics (SVG) file format. (open source)

Joomla! is one of the most powerful Open Source Content Management Systems on the planet. It is used all over the world for everything from simple websites to complex corporate applications. Joomla! is easy to install, simple to manage, and reliable.

Juice is the premier podcast receiver, allowing users to capture and listen to podcasts anytime and create their own audio channels on the fly. Highly recommended application. (open source)

"kwout" is a way you quote a part of a web page as an image with an image map. It keeps links "kwouted" functional.

MediaWiki is the information sharing software package that Wikipedia is built on. It is now used by several other projects of the non-profit Wikimedia Foundation and by many other wikis besides.

Money Manager Ex...This is solid cross-platform, easy-to-use personal finance software that helps you organize your finances and keeps track of where, when and how your money goes. ( open source)

MusikCube works well as an alternative to iTunes to manage your music collection. " It helps you just listen to what you want to hear,while offering innovative features not seen elsewhere." (open source)

MyTopix is a discussion forum poised to compete with some of the other players in the bulletin board market. It has all the features you need to get a community up and started quick and nothing that you don't.

NeoOffice is a full-featured set of office applications (including word processing, spreadsheet, presentation, and drawing programs) for Mac OS X. ( open source)

Nucleus CMS is an open-source blog management software package written in PHP, with a MySQL backend, it allows for multiple blogs and authors, easy publishing, commenting, RSS, archiving, search and more.

Open Office is a similar office suite to Microsoft Office available on different platforms. It offers a complete range of applications to tackle all your office tasks: Writer, Calc, Base, Impress, Draw, Math, Quickstarter etc. ( open source)

PDFCreator is a free tool to create PDF files from nearly any Windows application. Create PDF's and send them via email, encrypt them or merge multiple files into one PDF. ( open source)

PHPBB was launched in 2000 and has become one of the standard Open Source forums used worlwide. It has a large and highly customisable set of key features coupled with a standards compliant interface.

PollDaddy...With your free account from PollDaddy you can now create surveys and polls for your website, blog and social network profiles.

Project Looking Glass is based on Java technology and explores bringing a richer user experience to the desktop and applications via 3D windowing and visualization capabilities.

ReadPlease, a free program that reads text on your computer to you in a (somewhat) realistic human voice... Struggling readers can follow along as ReadPlease highlights words as it speaks. Use ReadPlease as a proofreading tool–writing mistakes are never so glaring as when you hear them out loud.

Rosegarden is a professional audio and MIDI sequencer, score editor, and general-purpose music composition and editing environment. This is a strong contender when it comes to working with Midi. (open source)

Scribus is a desktop publishing (DTP) application with some excellent page layout features and can be used as an alternative to Adobe PageMaker, QuarkXPress and Adobe InDesign. ( open source)

Simple Machines Forum (SMF) is professional grade community building software with a custom template system that gives you control over the layout and style of your forum. Highly recommended.

Textpattern is a flexible, elegant and easy-to-use content management system optimised for blogging. Like most CMS, it is coded in php and requires a mysql database for operations.

Traverso is a cross platform multitrack audio recording and editing suite, with an innovative User Interface. Its a complete solution from recording to CD mastering. (open source)

TurboCASH .7 is an accounting package distributed under General Public Licence (GPL). It is one of the world's first fully-featured open source accounts packages for small business. ( open source)

VoiceThread is an online media album that can hold essentially any type of media (images, documents and videos) and allows people to make comments in 5 different ways - using voice (with a microphone or telephone), text, audio file, or video (with a webcam) - and share them with anyone they wish. A VoiceThread allows group conversations to be collected and shared in one place, from anywhere in the world...(Free Pro Account for teachers)

Wikispaces...Create simple web pages that groups, friends, & families can edit together...K-12 Teacher? We're giving away 100,000 free wikis for primary/secondary education

WikkaWiki is a flexible, standards-compliant and lightweight wiki engine written in PHP, which uses MySQL to store pages. Designed for speed, extensibility, and security.

Wink is a Tutorial and Presentation creation software, primarily aimed at creating tutorials on how to use software (like a tutor for MS-Word/Excel etc). Using Wink you can capture screenshots, add explanations boxes, buttons, titles etc and generate a highly effective tutorial for your users.

Wordpress is the most widely used Open Source blogging platform with a huge developer community. It also has hundreds of free plugins and themes making it an all round excellent choice for bloggers.

eXpresso combines the power of Excel with the internet. It allows to share and edit your Excel spreadsheets online. eXpresso eliminates the need to resend new versions to your collaborators in consolidating changes securely for you. For none-Excel users eXpresso also provides a powerful browser- based AJAX editor. Best of all, its FREE!