Cool, that's a neat summary =). It was actually getting a bit confusing picking the "best" one. It seems like Mjolnir is the way to go.

Also - on a sidenote - is https://github.com/sdegutis/osx-snip still going?

I'm not actively working on it, mainly because Mjolnir has taken up most of my time. But I'd like to find more time to eventually work on it. Although I'm betting that future incarnations of it may actually be Mjolnir extensions ;)