Depends on what kind of rp you're looking for. Elf rp is up and running, as is Kharidian/desert rp. Most of the standard PoK's are also relatively active, and groups out of the mainstream field like The Godless are active as always. What did you have in mind to join?
In the terms of magic rp, I believe the Wizard Tower is reopening soon. But most kingdoms accept mage characters in general. If the desert interest you at all just shoot me a pm in game or drop an application on our thread. Good luck on finding a roleplay that fits you.
^ I know Kharid and Asgarnia are very liberal in terms of using magic in RP, we don't follow most of the old OOC restrictions on magic for the most part. Can't speak for Kandarin/Camelot, go prod Vekon or Nomad Steev respectively about that.Mods pls notice me