These are categorised by language, although in many cases they are usable in several different languages. Free software under the terms of the GNU General Public License . This requires the GNAT compiler to be installed first. Free software under the terms of the GNU General Public License . Includes full source code.
Source code is also available.
Free software under the terms of the GNU General Public License . A collection of C numerical and math routines, with source code. HTML parsing, HTTP, FTP, and lots more. Sample applications are also included. Includes source code.