The Audacity multi-track audio
editor and recorder got its start in the previous century; it is a popular
application that is available for multiple platforms, and it is licensed under the
GPLv2 or later. But Audacity has been acquired by
a newly
formed organization called Muse Group;
that event has caused something of an uproar in its community. The problem, at
least in part, is
the new Contributor
License Agreement (CLA) required to contribute to Audacity.

Source: LWN.net – [$] Audacity gets a CLA