Strongtalk

Strongtalk can make some compile time checks, and offer stronger type safety guarantees; this is the source of its name.

It is non-commercial, though it was originally a commercial project developed by a small startup company named LongView Technologies (trading as Animorphic Systems).

He wanted to improve the performance, add type-checking, and use native graphical user interface (GUI) widgets.

Griswold, Hölzle, Lars Bak, and others formed a small company (LongView Technologies, doing business as Animorphic Systems) to re-implement Strongtalk.

The firm was bought by Sun Microsystems in 1997, and the team got focused on Java, releasing the HotSpot virtual machine,[3] and work on Strongtalk stalled.