There are 2 repositories under stepmania topic.
Advanced rhythm game for Windows, Linux and OS X. Designed for both home and arcade use.
Advanced cross-platform rhythm game focused on keyboard play
A keys-per-second meter for osu! (or any rythm game), useful for live streaming and making videos
VSRG written in Lua https://discord.gg/ubKMtTk
The NotITG Mirin Template. Easily create modfiles using Lua.
Download and update song packs for StepMania with ease.
A web-based editor for rhythm game charts/maps. (Etterna, osu!mania, Stepmania, Quaver)
A tool that will find songs in your rhythm game's songs that is also in another rhythm game.
573controller allows you to transform an Arduino Leonardo or Micro into various 573 music game controllers
Deep Learning to Create StepMania SM FIles
An upgraded port/edit of ITG3's Encore Theme using the revived ITG3 Theme as its base which now also includes stuff from the Encore Final Theme.
A realtime score sharing system for Stepmania. ⚠️ NOTE: This service is deprecated and no longer works, but you can still self host it.
ultralight, a lightweight and minimal theme for StepMania 5.0 (no longer updated)
A Semi-Conversion/Recreation of In The Groove 1 & 2 to StepMania 5.
A pass-through proxy for groovestats.com that records non-ranked song scores.
Tools and utilities for interacting with StepMania 5 to provide added features for live streaming
A website that collects and preserves almost everything from StepMania, and the contents made by the community itself.
A simplified theme for Stepmania 5.1+ (currently only usable with stepmania master branch)
StepMania with 60 FPS on Raspberry Pi 4
Arduino Leonardo sketch for SOUND VOLTEX, DanceDanceRevolution, and pop'n music controllers (or any device with up to 9 buttons or 7 buttons + 2 encoders) with support for HID and Reactive lighting
Linux kernel patches and other goodies for use with stepmania