I don't know about the internals. But OTI developed Visual Age for Smalltalk and other VA for X products such VA for Java. They were all written mostly in Small

I don't know about the internals. But OTI developed Visual Age for Smalltalk and other VA for X products such VA for Java. They were all written mostly in Smalltalk, including VAJ (very interesting! It was a VM that ran both Smalltalk and Java). Eclipse was supposed to be inherited from VAJ, but having used Eclipse in its early days, I didn't see much resemblance..