- AutoREALM (C++, GPL-3.0, mature)
- Deity (Python, GPL-2.0, mature, inactive since 2014)
- Dungeon Mapper (C++, GPL-3.0, beta, inactive since 2013)
- GM Tools (C++, GPL-2.0, beta, inactive since 2004)
- JaNaG - Java Name Generator (Java, GPL-3.0, mature, inactive since 2016)
- Monster Generator (Java, MIT, mature)
- Open Legend RPG (Text, Custom, mature)
- PCGen (Java, LGPL-2.1, mature)
- Pymapper (Python, GPL-3.0, mature)
- RPDungeon - computer aided role playing (Pascal, GPL-2.0, beta, inactive since 2006)
- Rolemaster Office (Java, Apache-2.0, mature)
- Rolisteam (C++, JavaScript, GPL-2.0, mature)
- World Builder (Visual Basic, GPL-2.0, mature, inactive since 2007)