Editing Q Public License (section)

== History ==
[[KDE]], a [[desktop environment]] for [[Linux]], is based on Qt. Only the free open source edition of Qt was covered by the QPL; the commercial edition, which is functionally equal, is under a pay-per-use license and could not be freely distributed. Meanwhile, the [[Free Software Foundation]] and authors of the GPL objected to the QPL as it was a non-copyleft license incompatible with the GPL.<ref name="fsf">{{cite web |url=https://www.gnu.org/licenses/license-list.html#QPL |title=Various Licenses and Comments about Them |publisher=GNU Project}}</ref> As KDE grew in popularity, the [[free software community]] urged Trolltech to license Qt under the GPL to ensure that it would remain free software forever and could be used and developed by commercial third parties. Eventually, under pressure, Trolltech dual-licensed the free edition of Qt 2.2 for use under the terms of the GPL or the QPL.<ref>{{cite web |title=Trolltech to Release Qt Under GPL |url=http://www.linuxplanet.com/linuxplanet/reports/2269/1/ |first=Kevin |last=Reichard |publisher=LinuxPlanet |date=September 4, 2000 |access-date=October 27, 2018 |url-status=dead |archive-url=https://web.archive.org/web/20180324223759/http://www.linuxplanet.com/linuxplanet/reports/2269/1/ |archive-date=March 24, 2018}}</ref>