Econsultant has published a list of 400+ open source software. Most of these software works on Windows and Linux desktop system. Extremely useful open source applications and utilities available free under various licenses and you could save some coins.
- Anti-Spyware/Anti-Virus/Anti-Rootkit Utilities
- Audio/Music/MP3/Real/Wav Utilities
- Business/Office/Access/Excel/Word Utilities
- Communication Freeware Utilities
- Desktop Freeware Utilities
- Files and Folders Freeware Utilities
- Financial Freeware Utilities
- See complete list at Econsultant website.