Actually GPL allows you to keep your source code as long as you don’t ship the software and only allows users to use it over the network. (The full truth is a b

Actually GPL allows you to keep your source code as long as you don’t ship the software and only allows users to use it over the network. (The full truth is a bit more nuanced.) The newer AGPL closes this loophole. And yes: except for Linux and the GNU tools I guess most companies stick with Apache, BSD, Eclipse and MIT licensed software.