Open source software (OSS) has risen to great prominence. This software is also defined as computer software for which the source code and certain other rights normally reserved for copyright holders are provided under a software license that meets the Open Source Definition or that is in the public domain. It is also the most prominent example of open source development and often compared to user-generated content. Open Source software is open, all of the defects and security flaws are easily found. The term open source software originated as part of a marketing campaign for free software.
In the last year of 2006 there are 20 top most popular programs. This are:
1. 7-Zip – file compression + 7Zip Portable
2. Abiword – create word documents + Abi Portable
3. Audacity – sound editing and effects + Audacity Portable
4. Blender 3D – 3D modeling and animation + Blender Portable
5. ClamWin – antivirus and antispyware scanner + ClamWin Portable
6. Eraser – erases your data securely + Eraser Portable
7. FileZilla – ftp client + FileZilla Portable
8. Firefox – browser + Firefox Portable
9. Gaim – instant messenger + Gaim Portable
10. Ganttproject – scheduling , resource management, calendaring
11. Gimp – GimpShop – image manipulation + Gimp Portable
12. Media Portal – media center
13. NVU – html editor + NVU Portable
14. OpenOffice.org – office suite + Open Office.org Portable
15. PDFCreator – create PDF files
16. RSSOwl – rss reader
17. TaskSwitchXP – advanced task management utility
18. Thunderbird – e-mail client + Thunderbird Portable
19. VLC Media Player – media player + VLC Portable
20. WebHTTrack – web site copier