Mu͒seScore Studio is an Open Source (GNU GPL) music notation software that runs on all platforms supported by Qt5 (GNU/Linux, MacOS X, Windows) and is available in over forty different languages. It features an easy to use WYSIWYG editor with audio score playback for results that look and sound beautiful, rivaling commercial offerings.

HTML-XML-utils provides a number of simple utilities for manipulating and converting HTML and XML files in various ways. The suite consists of the following tools:

This minetest extension adds a great number of home decor elements like window shutters, flower pots, home electronics, tables, kitchen and bathroom fixtures, etc.

nfqueue-bindings is a set of high-level modules for several languages (Python and Perl, for the moment), for libnetfilter_queue. It provides a userspace API to access packets that have been queued by the kernel packet filter using the NFQUEUE target.

pssh provides a number of commands for executing against a group of computers, using SSH. It's most useful for operating on clusters of homogenously-configured hosts.

Doxygen is a documentation system for C++, C, Objective-C, C#, PHP, Java, Python, IDL, Fortran, VHDL and to some extent D. It can generate an on-line documentation browser (in HTML) and/or an off-line reference manual (in LaTeX) from a set of annotated source files.