Hexslides: Death to Death by Powerpoint! August, 2019 An opinionated tool to create beautiful presentations containing complex animations.
RDBG March, 2016 A ruby programmable debugger library based on the linux ptrace API and /proc/$pid/ interfaces.
SchemDBG October, 2014 A web based debugger front-end for debugging and reversing binaries. Easily allows to create complex widgets and scripts.
CodeWars October, 2011 A competitive programming challenge similar to Corewars, used in 2011 RWTH-CTF