There are many options for room EQ but the best are for multichannel systems and are digital. Among them are the Audyssey and the TacT. Also, there are more from the "professional" market from the inexpensive Behringers (which some have found sonically unacceptable except for bass) to the complex, integrated JBL Synthesis system.
The z-systems products are wonderful can be used for this purpose but, imho, are more suited to program EQ than to room EQ.
Again, one cannot make recommendations unless you tell us a lot more about your system.
Kal