Protocol buffers are a flexible, efficient, automated mechanism for serializing structured data - similar to XML, but smaller, faster, and simpler. You define how you want your data to be structured once, then you can use special generated source code to easily write and read your structured data to and from a variety of data streams and using a variety of languages. You can even update your data structure without breaking deployed programs that are compiled against the "old" format.

Vector-Optimized Library of Kernels is designed to help applications work with the processor's SIMD instruction sets. These are very powerful vector operations that can give signal processing a huge boost in performance.

session-token is a script, using the Session::Token module, to create session tokens, password reset codes, temporary passwords, random identifiers, etc.

Backend for the QtContacts API which stores contact information to a local SQLite database.

Ray Session is a GNU/Linux session manager for audio programs as Ardour, Carla, QTractor, Non-Timeline, etc...

ns-3 is a discrete-event network simulator for Internet systems, targeted primarily for research and educational use. ns-3 is free software, licensed under the GNU GPLv2 license, and is publicly available for research, development, and use. ns-3 is intended as an eventual replacement for the popular ns-2 simulator. The project acronym “nsnam” derives historically from the concatenation of ns (network simulator) and NAM (network animator).