Editing Squeak (section)

==License==
Squeak 4.0 and later may be downloaded at no cost, including source code, as a prebuilt [[virtual machine]] image licensed under the [[MIT License]], with the exception of some of the original Apple code, which is governed by the [[Apache License]].

Squeak was originally released by Apple under its own ''Squeak License''. While source code was available and modification permitted, the Squeak License contained an [[indemnity]] clause that prevented it from qualifying as true [[free and open-source software]].

In 2006, Apple [[Software relicensing|relicensed]] Squeak twice. First, in May, Apple used its own [[Apple Public Source License]], which satisfies the [[Free Software Foundation]]'s concept of a Free Software License<ref>{{cite web|url=https://www.gnu.org/philosophy/apsl.html |title=FSF's Opinion on the Apple Public Source License (APSL) 2.0 |publisher=Gnu.org |date=2011-05-07 |access-date=2011-06-12}}</ref> and has attained official approval from the [[Open Source Initiative]]<ref>{{cite web|url=http://www.opensource.org/pressreleases/osi-clarifies-APSL.php |title=Clarification of the APSL: Press Releases OS Clarifies The Status Of The APSL |publisher=Opensource.org |date=1999-03-17 |access-date=2011-06-12}}</ref> as an Open Source License. However, The Apple Public Source License fails to conform to the [[Debian Free Software Guidelines]]. To enable inclusion of [[Etoys (programming language)|Etoys]] in the [[One Laptop Per Child]] project, a second relicensing was undertaken using the Apache License. At this point, an effort was also made to address the issue of code contributed by members of the Squeak community, which it was not in Apple's power to unilaterally relicense.

For each contribution made under the Squeak License since 1996, a relicensing statement was obtained authorizing distribution under the [[MIT license]], and finally in March 2010, the result was released as Squeak 4.0, now under combined MIT and Apache licenses.<ref>{{cite web|url=http://www.h-online.com/open/news/item/Squeak-4-0-released-now-under-MIT-Apache-license-956267.html |publisher=The H Open |title=Squeak 4.0 released - now under MIT/Apache license |date=2010-03-16 |access-date=2011-06-12}}</ref>