This is a MIDI sequencer, songs are made of blocks. Each block represents a period in time. These blocks can be played in any order to form a complete song. Blocks are made of tracks on which the notes are placed. All tracks of a block are played simultaneously. Only one note can be played on one track at a time. Blocks can vary in length and may have different number of tracks.

rofs is a read-only filesystem that allows you to create a read-only mountpoint of a read-write directory on your system.

Apache Qpid is a cross-platform enterprise messaging system which implements the Advanced Message Queuing Protocol (AMQP), providing message brokers written in C++ and Java, along with clients for C++, Java JMS, .Net, Python, and Ruby.

git-crecord is a Git subcommand which allows users to interactively select changes to commit or stage using a ncurses-based text user interface. It is a port of the Mercurial crecord extension originally written by Mark Edgington.

MU-CITE is a citation tool for emacsen. MU-CITE's citing filter function is callable from various mail and news readers such as Gnus, MH-E, Wanderlust and Mew.