- Bemuse (JavaScript, TypeScript, AGPL-3.0, mature)
- Canta (Python, GPL-3.0, beta, inactive since 2011)
- Etterna (C, C++, Lua, MIT, beta)
- Frets on Fire X (Python, GPL-2.0, mature)
- Frets on Fire (Python, GPL-2.0, mature, inactive since 2008)
- OpenITG (C, C++, MIT, beta, inactive since 2017)
- osu! (C#, MIT, beta)
- Performous (C, C++, GPL-2.0, mature)
- PianOli (Java, GPL-3.0, mature)
- PyKaraoke (Python, C, LGPL-2.1, beta, inactive since 2011)
- Sinatra (C, GPL-3.0, mature, inactive since 2008)
- StepMania (C, C++, Lua, MIT, mature)
- Transcend (C++, ?, beta, inactive since 2005)
- UltraStar Deluxe (Pascal, GPL-2.0, mature)
- UltraStar Play (C#, MIT, beta)
- Vocaluxe (C#, C++, GPL-3.0, beta, inactive since 2018)