Open Source alternative: https://github.com/inercia/mitto

Something similar but for any ACP server: https://github.com/inercia/mitto

Similar to https://github.com/inercia/MCPShell, but the MCPShell can sandbox the execution of the shell code for higher safety.

I don't think they are comparable. MCPShell is a go program to run shell scripts, while the other one allows to define MCP operations as bash functions.

Not quite the same. The bash sdk can't be used to run arbitrary shell commands any more than to run arbitrary python programs.