MySQLTuner is a script written in Perl that will assist you with your MySQL configuration and make recommendations for increased performance and stability.

Hosting git repositories -- Gitolite allows you to setup git hosting on a central server, with very fine-grained access control and many (many!) more powerful features.

ModSecurity v3 Nginx Connector

Contributed stuff for munin (plugins, tools, etc...)

Official theme for the best server management panel of the 21st Century

oEmbed gateway service with additional non-oEmbed sources

Tools for PostgreSQL maintenance

A set of plugins for monitoring nginx with Munin

vzctl like utilities for lxc

PHPSTorm Live Templates (aka code snippets) for Drupal 7

Multicast server over VLC

A tool for syncing FBReader book positions between multiple systems. See http://forum.xda-developers.com/showthread.php?t=890982 for the server side and Android client.

Parses the feed XMLTV feed and puts into a MySQL db.