- Titanic - A private server for all osu! clients
- snowflake - A card-jitsu snow server emulator
- hexagon - A game server for the now defunct game "hexis"
- chio.py - A python library for serializing and deserializing bancho packets
- osu.py - A python library that emulates the osu! stable client
- bancho-loadtesting - A tool to test the performance of bancho servers
- go-puush - A replacement server for puush, written in go
- osutp - A revival of the osu!tp system, including a recreation of the original frontend
- houdini-websockets - A plugin for houdini, which adds native websocket functionality
- osz2.py - A python library for reading and extracting osz2 files
- osz2-go - A go library for reading and extracting osz2 files