GM's will never approve any 3rd party software - they aren't allowed to do that. Even if someone did "approve" it today, the software could be changed tomorrow and then become non-compliant.

But yes, a few of us have used it without issue - seems safe. This product in particular is all open source, so if you wanted to go look at the source code yourself you could do so.

I used this along with EMA and some keyboard macros (Synergy) and it worked well - much better than my previous attempts at using separate programs for window management, focus control, etc.