Educational/open for learning (clean-room or alternative implementations), not official code
https://github.com/instructkr/claw-code https://github.com/SinghCoder/claude-code https://github.com/chiragjoshi12/claude-code https://github.com/chauncygu/collection-claude-code-source-code https://github.com/HKUDS/nanobot https://github.com/pangoleen/PyClaw https://github.com/1rgs/claude-code-proxy https://github.com/e10nMa2k/cc-mini