Qt is a cross-platform C++ application framework. Qt's primary feature is its rich set of widgets that provide standard GUI functionality.

amazon-ec2-net-utils provides udev integration and helper utilities to manage network configuration in the Amazon EC2 cloud environment

Guzzle is a PHP HTTP client that makes it easy to send HTTP requests and trivial to integrate with web services.

ZArchive is yet another file archive format. Think of zip, tar, 7z, etc. but with the requirement of allowing random-access reads and supporting Zstandard compression.

A macro processor that is used automatically by the GNU C compiler to transform programs before actual compilation.

Qbs is a general purpose cross-platform build tool that aims at fast and correct incremental builds. It features a project description language that is similar to QML.