Searching for mods....

[Captain Kwok]

Yes.

Some of those are fairly popular like DevNull (similar to stock, but better) and Carrier Battles (not like stock, but better). The Invasion Mod by CombatWombat also has forums and has a couple of pbw games running. I've never tried the Imperium one, but I believe an older version was packaged with Deluxe and an update is available at SE.net now. The Peace Station mod has a site, but I've never tried it myself...

PvK Balance mod is stock but with highly balance culture and racial traits, and Ultimate sizes just adds a bunch of vehicle sizes for stock. I guess they're both mini mods.

Keep in mind the MM link I gave earlier has descriptions for all these mods.