From curse gaming:
Omen
http://wow.curse.com/downloads/wow-addons/details/omen-threat-meter.aspx
KTM
http://wow.curse.com/downloads/wow-addons/details/klhthreat-meter.aspx
Tested with my warlock. KTM still got "out of Date" while on the addon list. Omen, luckily, actually tracked my pet and myself when KTM did not. I tried to group with someone but got nothing so i dont know if they're actually party and Raid Viable, BUT KTM did throw out an error message when i was trying to configure it.