Antivirus

• Gateway Anti-Virus
• ClamWin
• Clam AntiVirus

Application Servers

Astronomy Software

Audio Software

Backup Software

BitTorrent Clients

Business Software

CD Writing Software

Compilers and Interpreters

Computer-aided Design Software

Content Management Systems

Data Compression Software

Database Management Systems

Desktop Environments

Development Toolkits and Libraries

Educational Software

Email Software

File Managers

File Transfer Software

Games

GIS Software

2D Graphics Software

3D Graphics Software

Groupware

HTML Editors

Image Galleries

Instant Messengers

Internet Forum Software

IRC Clients

Learning Support Software

Mathematics Software

Media Players

Multimedia codecs, Containers, and Splitters

Network management software

Note-taking Software

Office Suites

Operating Systems

PDF Software

Personal information managers

Project Management Software

Revision Control software

Science Software

Search Engine Software

Special Purpose File Systems

Spreadsheets

Television Software

TeX Software

Text Editors

Usenet Clients

Video Software

VoIP software

Web Browsers

Window Managers

Windowing Systems