Last updated at 4:51 am UTC on 18 February 2017
License since Squeak 4.0 is MIT
From the Squeak 4.0 release notes:
Welcome to Squeak - a free, open Smalltalk system.
Squeak 4.0 is the pinnacle of several years of relicensing work. Though this version is functionally equivalent to Squeak 3.10.2, it is the first version of Squeak to be licensed fully under FOSS terms. Squeak 4.0 is licensed under MIT, with some original Apple parts remaining under the Apache 2.0 license.
The licensing effort was a major task. We'd like to acknowledge the following individuals and organizations for their support, and for their tireless work:
Jecel Assumpcao Jr.
Randal L. Schwartz
Viewpoints Research Institute
Squeak 4.0 Release Team
(With lots of help from the Squeak community.)
For the old license which governed squeak before see Squeak-L.