@dGr8LookinSparky asked me to make a list of quake3 mods that have an active forum. So far I found:
iortcw: https://github.com/iortcw/iortcw (very active on github but I can’t find a website or forum for them. It is a single player game based on quake3 code).
Urban Terror: https://www.urbanterror.info (very active and has forum).
Spearmint: Spearmint - Video Game Engine (forum can be found at: https://forum.clover.moe/ )
Exessive dawn: http://edawn-mod.org/ (check out latest improvements at excessive dawn • View topic - Quake3 1.32e )
CPMA: https://playmorepromode.com/ see youtube clip down on page for more info on features.
Quake3 Programming Discussion Forum: Quake3World.com • View forum - Programming Discussion
Dead but maybe useful:
Quake3-fortress: some development tools can be found at: Q3F - Power through Teamplay
OpenArena: OpenArena EX - オープンアリーナ (been years since last release but forum still active: OpenArena Message Boards - Index )
Dead and probably useless:
Freeze Tag: some quake3 mod which code can be found at: Freeze Tag Might be used as a base for a trem mod.
Ps many more live and dead Quake3 based mods can be found at: Mods - Quake III Arena - Mod DB
I hope this you will find something useful at at least one of above so you don’t have to ‘re-invent the wheel’.
See you in game,