The Sith are affiliated with the New Order, however, they do not serve anyone.
The Rogue Jedi Order right now is in a similar state to the normal Jedi Order. There, but barely.
Your best bet, IMO, is TJO. It may be slow, but it'll be around until the end of time. Darksiders have more options, but we have too many atm, so TJO it is.
OS: In a world of bon-bons, you are a twinkie.
Ahnk: God damn you, I am Count Chocula and you know it.
I'm not spending my anniversary night thumping my head against the wall. - Damalis, on Moderating TRF
Then tell him you want it harder, damnit! - Ahnk, on Damalis