| AbiSource | 3 | root | |
| XWiki | 3 | root | |
| Xorg | 3 | root | |
| XMMS2 | 6 | root | |
| Xiph.org | 4 | root | |
| XenSource | 1 | root | |
| wxWidgets | 2 | root | |
| WinLibre | 5 | root | WinLibre is a rigorous selection of free, legal software for Windows 98, 2000, XP |
| Wikimedia Foundation | 2 | root | |
| University of Michigan Aerospace Engineering & Space Science Departments | 1 | root | |
| Ubuntu & Bazaar | 12 | root | |
| The Wine Project | 5 | root | |
| The University of Texas at Austin: RTF New Media Initiative | 2 | root | |
| The Shmoo Group | 2 | root | |
| The Perl Foundation | 4 | root | |
| The Mozilla Foundation | 6 | root | |
| The Mono Project | 3 | root | |
| The LLVM Compiler Infrastructure | 2 | root | |
| The GNU Project | 3 | root | |
| The Free Software Initiative of Japan | 2 | root | |
| The Free Network Project | 2 | root | |
| The Free Earth Foundation | 1 | root | |
| The Fedora Project | 3 | root | |
| Subversion | 3 | root | |
| SCons | 1 | root | |
| Samba | 1 | root | |
| Ruby Central Inc. | 6 | root | Ruby Central is the organization beind the RubyCOnf, ruby-lang.org and many other Ruby community initiatives. |
| Refractions Research | 1 | root | |
| ReactOS | 3 | root | |
| Python Software Foundation | 8 | root | |
| Project Looking Glass | 1 | root | |
| PostgreSQL Project | 3 | root | |
| Portland State University | 2 | root | |
| Plone Foundation | 1 | root | |
| PlanetMath | 2 | root | |
| PHP | 8 | root | PHP is a widely-used general-purpose scripting language that is especially suited for Web development and can be embedded into HTML. |
| Oregon State University Open Source Lab (OSL) | 3 | root | |
| openSUSE | 1 | root | |
| OpenSolaris | 1 | root | |
| OpenOffice.org | 2 | root | |
| Open Source Development Labs (OSDL) | 3 | root | |
| Open Source Cluster Application Resources (OSCAR) | 2 | root | |
| Open Source Applications Foundation | 3 | root | |
| Open Security Foundation (OSVDB) | 2 | root | |
| One Laptop Per Child | 4 | root | |
| OhioLINK | 2 | root | The Ohio Library and Information Network |
| OGRE | 1 | root | |
| Nmap Security Scanner | 3 | root | |
| NetBSD | 3 | root | NetBSD is a free, secure, and highly portable Unix-like Open Source operating system available for many platforms. |
| MythTV | 4 | root | |
