GNU Smalltalk's actually decently lively, in my opinion. Its lack of updates has a lot more to do with the core being stable than anything else. The two probl

GNU Smalltalk's actually decently lively, in my opinion. Its lack of updates has a lot more to do with the core being stable than anything else. The two problems I have with it are simply that it's far slower than Pharo or Squeak, and that using the GPL for a Smalltalk makes me extremely nervous, since the concept of a derivative work gets really dicey when any half-decent Smalltalk app is going to end up throwing new methods into the base library.