Here are some listings of only free software. For lists that include non-free software, see the HowTo Wiki * Free and Open Source Wikia - user editable FOSS database * The software directory from the Free Software Foundation (free content) * SourceForge - Open Source software development web site * Free Software Catalog - a collection of the best free software and online services that includes open source and freeware * Ohloh - open source projects listed with project and developer metrics * OS Reviews Reviews of free and open source software (free content) * Free Web Software (GPL Web Software) This question was asked on The HowTo Wiki.