KataGo is an open-source algorithm derived from AlphaGo, but with a number of tricks so that it trained faster: https://katagotraining.org/

It likely surpasses AlphaGo, and just like Stockfish, it delivers a protocol that can hook into many user interface apps: https://github.com/lightvector/KataGo?tab=readme-ov-file#gui...

From those technologies, also came an interesting visualisation of how human players changed their habits following AlphaGo: https://drive.google.com/file/d/16-ntvk3D1_pgjJ7u64t4jMYMh0z...