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

Single Packet Authorization > Port Knocking

Improved MySQL Graphs for Munin

mod_pagespeed module for CPanel WHM

Library to interface with the consul HTTP API from ngx_lua

Utility script converting Apache/Tomcat log files to CSV format files

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