LambdaMOO is mostly people being idle. There is, however, a spiritual successor called ChatMUD. It's based on a fork of a fork of the original LambdaMOO server

LambdaMOO is mostly people being idle. There is, however, a spiritual successor called ChatMUD. It's based on a fork of a fork of the original LambdaMOO server called ToastStunt (forked from Stunt). It seems to have a bit more pep in its step if you're looking for a semi-active social / programming MOO. https://chatmud.com/ https://chatmud.com/ https://github.com/lisdude/toaststunt https://github.com/lisdude/toaststunt