SWIG is a software development tool that connects programs written in C and C++ with a variety of high-level programming languages.

Minizip contrib in zlib with latest bug fixes that supports PKWARE disk spanning, AES encryption, and IO buffering

A massively spiffy yet delicately unobtrusive compression library.

Low-precision matrix multiplication

Curl is a tool and libcurl is a library for transferring data with URL syntax, supporting FTP, FTPS, HTTP, HTTPS, GOPHER, TFTP, SCP, SFTP, TELNET, DICT, LDAP, LDAPS, FILE, IMAP, SMTP, POP3, RTSP and RTMP. libcurl offers a myriad of powerful features

a small build system with a focus on speed

A short and sweet WebSocket client for C++

Copy of FreeGLUT's svn repo on sourceforge, for easy contribution

0mq 'highlevel' C++ bindings

ØMQ libzmq core library -- development trunk