Social Source Commons

Free anti-spyware scanner for Windows.

Open Source platform for Enterprise Content Management (ECM), providing Document Management, Collaboration, Records Management, Knowledge Management, Web Content Management and Imaging.

Apertium is a machine translation platform, initially aimed at related-language pairs, but recently expanded to deal with more divergent language pairs (such as English-Catalan). The platform provides a language-independent machine translation engine, tools to manage the linguistic data necessary to build a machine translation system for a given language pair, and linguistic data for 15 language pairs, with more under development.

Inexpensive antivirus software for up to five computers.

Free language translator.

Extension which provides framework for translating MediaWiki, its extensions and other projects.

ccPublisher will help you tag your audio and video files with information about your license and it allows you to upload Creative Commons-licensed audio and video works to the Internet Archive for free hosting.

Free E-Advocacy for Grassroots

CleanUp! is a powerful and easy-to-use application that removes temporary files created while surfing the web, empties the Recycle Bin, deletes files from your temporary folders and more.

CleanUp! frees disk space and reduces the "clutter" on your computer helping it to run more efficiently. It also can be used as a way to protect your privacy on the Internet. You can even instruct CleanUp! to securely delete files making it impossible to retrieve their contents using lower-level disk tools - just another way of protecting your privacy.

Colloquy is an advanced IRC & SILC client

Cyberduck is an open source FTP and SFTP client for Mac OS X. Cyberduck is easy to use and includes features such as uploading and downloading by drag and drop. It can also synchronise files and directories. Cyberduck includes a bookmark manager and supports the Mac OS X Keychain and Bonjour networking.

Livejournal / Blogger / Wordpress Client for Firefox.

DotNetNuke is a Web Application Framework for creating web sites, intranets and extranets, and online publishing portals. It is similar to Plone or Drupal, but runs on ASP rather than PHP.

dotSUB is a browser based tool enabling subtitling of videos on the web into and from any language.

An award-wining free software replacement to remove software installations from your computer.It loads faster, and displays the additional information with clickable URLs (if available). In addition, it allows you to perform multiple uninstalls in a row.

online video sharing web application

Free hosted event planning and invitation mailing website.

Create a RSS feed that consists of articles and links from a number of different pages.

Free FTP client software.

Popular open source web browser from Mozilla

Wicked fast pdf reader, and it's free.

Free, Windows open source FTP client.

Conference calls for businesses, organizations, and individuals. Scheduled or on-demand. Free and premium services available.

Freedom Toasters are self-contained, computer-based, 'Bring 'n Burn' facilities

GanttProject is a tool for creating a project schedule by means of a Gantt chart and resource load chart. GanttProject allows you to break down your project into a tree of tasks and assign human resources that have to work on each task. You can also establish dependencies between tasks, like "this task can't start until this one is finished". GanttProject renders your project using two charts: Gantt chart for tasks and resource load chart for resources. You may print the charts, generate PDF and HTML reports, exchange data with Microsoft(R) Project(TM) and spreadsheet applications.

gedit-pomode is a plugin for convenient editing of PO files in the gedit text editor.

Geographic.org offers free, downloadable maps and flags from around the world. Ideal for finding graphics for international presentations. Additional features include a list of country and airport codes.

Free graphics manipulation program similar to Adobe Photoshop.

GNOME Dictionary is a DICT client written in C by Emmanuele Bassi and others. It is part of the open-source GNOME desktop software suite, inside the gnome-utils meta-package. It allows users of GNOME to look up words on dictionary sources.

GNU Aspell is a Free and Open Source spell checker designed to eventually replace Ispell. It can either be used as a library or as an independent spell checker. Its main feature is that it does a superior job of suggesting possible replacements for misspelled words.

The quintessential search engine.

Hosted web/email/usenet discussion groups.

GRAMPS is a genealogy program for Linux and other UNIX-like systems. The GRAMPS name stands for Genealogical Research and Analysis Management Programming System. GRAMPS helps you track your family tree. It allows you to store, edit, and research.

gThumb is an image viewer and browser for the GNOME Desktop. ...

Publish and Host your RSS Feed for FREE

Hunspell is the default spell checker of OpenOffice.org and Mozilla Firefox 3 & Thunderbird.

Free, graphical FTP client

ImpressCMS is a community developed Content Management System for building and maintaining dynamic web sites.

ImpressCMS is designed for a wide range of users, from business to community users, from large enterprises to people who want a simple, easy to use blogging tool.

Ispell is a program that enables users to correct spelling and typographical errors in a file. When presented with a word that is not in the dictionary, Ispell attempts to find near misses that might include the word you meant.

jDictionary has an intuitive user interface and is able to upgrade itself, upgrade its plugins, and provide news and information about new plugins.

Want to listen to internet audio programs but can't when they are scheduled? This program lets you create your own custom online audio anytime, anywhere. Really.

KBabel is a set of tools for editing and managing gettext PO files.

Knoppix is a computer operating system which runs entirely from a CD or DVD drive, without performing an installation process or using the hard drive. Knoppix is a Debian based GNU/Linux distribution LiveCD, developed by GNU/Linux consultant Klaus Knopper

Launchpad Translations (codenamed "Rosetta") is a platform for open source application translation on the internet. It lets anybody help translate their favorite open source application into their favorite spoken language. Launchpad supports most localizable open-source applications.

An open source survey application, LimeSurvey is available in over 40 languages.

A new free web service that lets you create, store and syndicate your own custom RSS feeds from anywhere.

Mac GNU Privacy Guard (Mac GPG for short) is, after a fashion, the Mac OS X port of GnuPG, licensed under the GNU GPL.

milter-greylist is a stand-alone milter written in C that implements the greylist filtering method to block spam.

Download and watch high resolution internet TV shows and videos in one application. New channels arrive daily in the built-in Channel Guide.

Event management service with free and paid versions.

NewsRack is a tool/service for classifying, filing, and long-term archiving of news. Users specify filtering rules which are used to select relevant articles from incoming news feeds. The selected articles are then classified into various categories.

OmegaT is a free translation memory application written in Java. It is a tool intended for professional translators.

Free video chat program

Free, Open dynamic web mapper. (An alternative to Google/Yahoo Maps)

OpenMRS is a community-developed, open-source, enterprise electronic medical record system framework intended to aid resource-constrained healthcare environments.

Free contact and donor database for grassroots organizing groups. Also known as ODB.

Take screenshots of websites/pages that you can print out *on one page*. Great for archiving, presentations, etc. esp. when not connected to the Internet.

PeerGuardian 2 is an opensource windows firewall

Open source web statistics and audience measurement software.