- An online community site dedicated to free software development. It contains articles, blogs, and an annotated list of free software projects.
Alioth - Welcome
- Hosts Debian-backed or Debian-led software projects and facilitates contributions from external developers.
- A repository of open source projects; offers free access to CVS/SVN, mailing lists, bug tracking, message boards/forums, task management, site hosting, permanent file archive, full backups, and total web-based administration.
Code Snippets Wiki
- A public code snippet library that anyone can edit. This repository is organized and searchable by computer language.
FSF/UNESCO Free Software Directory
- A useful directory of free software that runs under free operating systems particularly the GNU operating system and its GNU/Linux variants; organized by subject area.
GForge Collaborative Development Environment
- A GPLed software fork of the Web-based project-management and collaboration software (Alexandria code) originally created for SourceForge. It provides project hosting, version control (CVS and Subversion), bug-tracking, and messaging.
GetDeb - Software for Ubuntu Linux
- An Ubuntu software portal with ready-to-install applications in Ubuntu's default package format. It was created to simplify the installation of new software for Ubuntu users. GetDeb focuses both on providing newer versions of software included in Ubuntu and software that is omitted from the official repositories. PlayDeb is an ancilliary project to GetDeb but with an explicit focus on games. Click on the Games link to access this.
- The primary KDE applications site; replaces APPS.KDE.COM.
- THE site for downloading documents and templates for enhancing the KDE desktop.
Koders - Source Code Search Engine
- A huge database of source code searchable by programming language and license; coders are encouraged to contribute their project to the database
LUnIx . . . Linux CAD Links
- Collection of CAD software links for Linux; includes a brief description of software (with homepage link); information on license type, source code and binary packages.
Linux Business Applications
- Directory of businesses that use Linux in their day-to-operations and a good place to find out about Linux in business; also availble in French.
Linux Equivalents to Windows Software
- A handy table of Linux software equivalents organized by subject area. Each entry points to a portal page providing an overview of the software, a screenshot, a comprehensive list of its features, and links to sites offering information and support on the software such as forums, tutorials, and reviews.
- A resource site for developers and users of open source mapping software; many mapping projects, organized by broad subject categories, are hosted on this site
Medical Free/Libre and Open Source Software
- A searchable database of Free/Libre and Open Source Software (FLOSS) projects in health care and medicine. It offers an open content platform to foster the exchange of ideas, knowledge, and experiences about these projects.
OSOR.eu - Open Source Observatory and Repository
- The Open Source Observatory and Repository for European public administrations (OSOR) is a platform for exchanging information, experiences and FLOSS-based code for use in public administrations. There is a repository with code and documentation for public administrations and a state-of-the art forge for collaborative software development.
- Database of open hardware designs and design programs (especially the EDA end of hardware design).
Python Package Index
- A repository of software for the Python programming language. There are currently 8800+ packages in the database.
SEUL - Simple End User Linux
- A hosting site for high-quality Linux applications primarily in education, science, and advocacy; also manages and coordinates communications between projects.
SGI Open Source Project List
- An annotated list of open source projects which have either originated within SGI, have SGI employees coordinating the development and maintaining the master trees, or have SGI employees as significant core contributors.
- A central point for development, distribution and maintenance of GNU Software; similar to SourceForge, but not as big.
Tuxfinder - Linux Search Tool
- A searchable database of Linux applications; includes distribution packages (Red Hat, Debian, and Slackware), software applications, and documentation. Also available in French.
Welcome New Breed Software
- Primary focus is games software, but useful libraries, utilities and tools are included. N.B.: Some of the games for Linux are freeware, which does not include the source code.