Gambit is an efficient implementation of the Scheme programming language.

Ink/Stitch: an Inkscape extension for machine embroidery design

TLS/SSL and crypto library

xmpp.org website (builds: https://travis-ci.org/xsf/xmpp.org/builds)

A powerful, accurate, and easy-to-use Python library for doing colorspace conversions

A python library to manipulate formal languages and various automata

SQL for Humans™

Thor Vector Graphics is a lightweight portable library used for drawing vector-based scenes and a...

TaskJuggler - Project Management beyond Gantt chart drawing

novelWriter is an open source plain text editor designed for writing novels.