Is there an app like ROM-control for non-AOKP roms? I found ROM-control very useful in ICS. But it can only work on AOKP roms. So is there an app can do the same job on ROMs other than AOKP?
The answer is no, you cannot, because ROM Control is an app that is geared and orientated towards Android 4 and in this instance AOKP, hence internal API's are different. Back porting it into a non-ICS/non-AOKP ROM may fail due to the dependencies on the aspect of AOKP, such as settings, and ICS internals are vastly different to non-ICS code. 

If you are a programmer and like to torture yourself with the challenge of it, then maybe its possible to back-port certain aspects and build the ROM yourself.