Is GPL licensing in decline?
A debate has raged for months about open source licensing trends. It all started with assertions that the GNU General Public License (GPL) is rapidly falling from favor as an open source license, replaced largely by the Apache License. Free software advocates couldn't disagree more.
What's really going on? To understand the answer, you need to know a little background.
A capsule history of open source licensing
The GPL is by far the most widely used copyright license. It's intended to deliver the "four freedoms," where end-users are free to use, study, modify, and distribute GPL-licensed software for any purpose.