Comment VirtualBox (Score 3, Interesting) 171
In VirtualBox v4.0, Oracle released the core as an open-source projet and the proprietary extensions as a plug-in. This proprietary extension is free for home use but commercial users must by a licence. The extension is not 100% necessary but does provides some very useful features, such as being able to connect to the "console" of a headless VM. Cool right?
Well, not really. There is at the moment no way to actually buy such a licence from Oracle, so all the people using VirtualBox v4.0 with this extension in a business are technically out of compliance.
VirtualBox is cool, but they really need some leadership from Oracle.