#1 AIFree
Gymnasium (ex-OpenAI Gym — alternative #1 to gym
A standard API for reinforcement learning environments with popular reference environments (gym successor).
GitHub source
Recorded alternatives
Alternatives to gym
Every candidate below sits in AI. What ends up on this page is decided entirely by a recorded score — not by bidding, not by editor taste. Review both records, check current vendor terms, then decide.
#2 AIFree
RL Baselines3 Zoo — alternative #2 to gym
A training framework for Stable Baselines3 reinforcement learning agents with hyperparameter optimization, pre-trained agents, and extensive...
GitHub source
#3 AIFree
Tianshou — alternative #3 to gym
An elegant PyTorch deep reinforcement learning library with clean API design and comprehensive algorithm implementations. Supports both sing...
GitHub source
Questions about this page
How were these alternatives selected?
Each candidate is a live catalogue record in the same primary category, picked by a deterministic score that Oryxen records in its catalogue: how many meaningful words the two listings share, whether their pricing classes oppose (a paid product against a free one), whether both are open source, and whether either record is featured. The same catalogue state always produces the same list — no randomness, no manual ranking.
Are these alternatives ranked by payment?
No. Rows are ordered only by the recorded score, highest first, with alphabetical ties — payment never influences the order, nothing here is paid placement, and Oryxen charges no listing or placement fee.
Always verify current terms with gym directly — Oryxen records pricing classes, not live quotes.