Primary Sources
From FOSS
The following five large sites provide access to most of the free open source software:
- Apache Software Foundation - Originally the source for the popular Apache web server. Now offers an array of FOSS web development services, including Java applications servers, frameworks, and application development tools.
- Mozilla.org – Best known for the Firefox web browser. Also supports development of the Thunderbird email application and related components.
- OpenOffice.org - The popular open system office suite, including the Writer word processor, Calc spreadsheet, Impress presentation software, Base database manager, and related tools. Excellent interoperability with MS Office.
- Savannah - Central point for development, distribution, and maintenance of GNU software. See related Free Software Foundation focused on GNU policy and licensing.
- SourceForge.net – Supports tens of thousands of open source projects, including community organization and management tools to help teams develop their software. Many projects are FOSS, some are COSS.

