Auction logger (see auctions from in game outside of game):
http://ahungry.com/eqauctions/
Log parsing map graph (works well with an OS that can pin windows to top / do transparent overlays):
https://github.com/ahungry/ahungry-map
Automatic patch system + web based map graph:
https://github.com/ahungry/p99-patcher
Login screen fix for GNU/Linux clients in EQ:
https://github.com/Zaela/p99-login-middlemand