There's others too, but i don't need to go into every plugin, here. I can sum it all up by saying that i prefer the flexibility, and granular control of compiz (via CCSM). It performance is also reasonable, and i don't experience problems with it, that i do with both GS/mutter and Cinnamon. (like a bunch of xruns, when opening activites / or scale in cinnamon).
There's also been some great fixes for compiz in the last couple of weeks, the 2 that i noticed right away, was the nvidia fix and the cpu fix. The former being visually noticable in the odd situation...and the latter being a reduction of CPU usage by compiz, by like 40-50% on my system.
anyway, GS isn't my cup of tea and regardless it causes xruns on my (proaudio) system, which means it isn't usable.