Enjo's (and mantained by Enjo) addons for Orbiter Beta
AbsoluteKillrot-v.1.2 (The compatible stable version)
Orbiter version: Beta r.55, possibly further
Orbiter version: Beta r.54
Orbiter version: Beta r.14, through r.20, up to about r.45:
Orbiter version: Beta r.13:
Source code