The Free Software Foundation directory is a project of the Free Software Foundation (FSF) and United Nations Education, Scientific and Cultural Organization (UNESCO). They catalog useful free software that runs under free operating systems - particularly the GNU operating system and its GNU/Linux variants.

• Browse the C libraries directory that mostly used in GNU/Linux and its variants.
• Browse the C++ libraries directory that mostly used in GNU/Linux and its variants.
• Browse all the GNU packages directory that used in GNU/Linux and its variants.
• Browse all the packages in the directory.

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