[jug]

I was going to say that it sounds a little like that Smalltalk IDE Squeak, and then it dawned upon me that this is actually a Smalltalk dialect too. :D

I'm going to throw this in here:

"Squeak or Pharo for the beginning Smalltalker?"

https://stackoverflow.com/questions/8426981/squeak-or-pharo-...

And a third option that is much leaner and maybe less overwhelming especially if you are interested in actually learning Smalltalk itself to begin with:

https://github.com/Cuis-Smalltalk/Cuis-Smalltalk-Dev

[sigzero]

Pharo forked from Squeak a long while ago.