environment
Gymnasium
The community-maintained successor to OpenAI Gym. Actively supported with bug fixes and new features.
environment
PettingZoo
Multi-agent extension of Gym for building and benchmarking multi-agent RL environments.
environment
Unity ML-Agents
A powerful toolkit for creating complex 3D environments using Unity.
environment
Isaac Gym / Brax / MuJoCo
Physics simulators used for robotic and continuous control tasks.