Mod series Kane's Return for Tiberian Sun, originally released at kyberia.sk webpage. Presently not being developed any more, but already giving quite a lot of new units, also rebalancing the game towards more dynamic game and realistic range warfare.
Battletech mod for Tiberian Sun. Partially based on MechCommander. Just extract the RAR within EXE to the game directory. Idea courtesy of current holder of BT rights (?), includes music theme from MechCommander (Microprose).