This is how they classify them at KCOM...
Inherent force: holding tissue/joint at balanced ligamentous tension until the restricted tissues return to homeostasis.
Respiratory force: uses the action of the thoracic cage and "air hunger" in order to a) relax tissues, b)enhance position of the area under treatment, c)provide respiratory impulse.
Muscle Energy: activating force of physician is opposed by patient in order to relax muscle tissues. May be used directly or indirectly.
High Velocity Low Amplitude: take a joint to the restricted barrier and then "pop" it a little further.
Springing: gently spring against the restrictive barrier.
Soft Tissue:
inhibition - steady pressure to soft tissues to effect relaxation
stretching and kneading - self explanatory
petrissage and skin rolling - deep kneading and squeezing (ouch!)
deep friction - deepest kneeding to work out fibrotic changes
effleurage- lightly stroking the skin to move fluids into and along lymph channels.
counterstrain: "wrap" patient around tenderpoint and hold for 90 seconds until tenderpoint relaxes.(this is the craziest one and it works!)
There are a bunch more, but I'm in the middle of studying for finals and that's all I can think of during my break from biochem. Hope it helps a little!