Lets not forget the Legion (VTS) ?!?!
For the rest:
Fury
Titans
Elysium
Virus
The Frying Dutchmen
4D (merger between DpM and 4FS)
TGE (the galactic embasy)
DIG (don't remember what it stands for)
ROD (riders of death)
DPM (dominus per malus)
4FS (started out as cluster but became real alliance)
Minkians
VvV (vini, vidi, vichi)
Death
The Assasins or something like that
Silver
Xanadu
hmm, what other ones do I know......
Angle
Draft (4D's junior alliance)
Revolt (darn that was fun
)
7sins (true, a c-ally, but you've never seen a better one, was from round 7, was FLTV priv gall c-ally my 4D gallaxy was in
)
Blue Tuba
TE
Epical
Inevitable (never got of the drawingboard)
Madcows
Wrath
Infection
Illiad
hmm, and a lot more I remember just not the names I can come up with atm :P