Michael Feathers

scythe. A tool for detecting barely used code in production

jop. a gem to add J language array commands to Ruby

delta-flora. Ruby

repodepot-ruby. Tools to aid mining of ruby code in git repositories

vih. a simple vi clone written in Haskell

cuultralight. a single file C++ unit testing framework

vise. a tool to maintain invariants during refactoring

mothersubber. an experimental Ruby subobject replacement utility for ObjectMothers

todo. Ruby