Here are top ten open-source applications widely in use.
1. Firefox
2. Open source CMS: Drupal, Plone, and Joomla!
3. XAMPP
4. OpenOffice.org
5. EasyEclipse
6. Custom Linux (SmoothWall, IPCop, OpenFiler)
7. Trac and Subversion
8. CRM: SugarCRM and EGS
9. Thunderbird email client
10. Windows utilities: 7-zip, PuTTY (SSH client), Filezilla (FTP client), PDF Creator, SciTE (text editor)
Top ten
