Use a SMT solver to invert the arrow of time in Game Of Life.

Use LUA scripting for dynamic binary instrumentation and analysis using PIN.

A web based debugger front-end for debugging and reversing binaries. Easily allows to create complex widgets and scripts.

A compiler, interpreter and JITer for brainfuck. Build in literate ruby.

A round based strategy game, build for the Ludum Dare 27 competition.

A small custom VM written in golang that was used as a service during the 2012 RWTH-CTF.

A competitive programming challenge similar to Corewars, used in 2011 RWTH-CTF