Our great sponsors
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Lila
Discontinued ♞ lichess.org: the forever free, adless and open source chess server ♞ [Moved to: https://github.com/lichess-org/lila] (by ornicar)
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WorkOS
The modern identity platform for B2B SaaS. The APIs are flexible and easy-to-use, supporting authentication, user identity, and complex enterprise features like SSO and SCIM provisioning.
It really depends on what platform you're playing on. High-level platforms like FIDE Tournaments and lichess.org have more restrictions, while low-level ones like chess.c*m have fewer restrictions to attract more players.
NOTE:
The number of mentions on this list indicates mentions on common posts plus user suggested alternatives.
Hence, a higher number means a more popular project.