MAIN MAP RESOURCES
Mapraider - Unreal Tournament - One the best known resources for UT99 maps
Unreal Playground UT99 Maps - The UT99 maps zone of UnrealPlayground portal
UT-files Maps - A great collection of ut99 maps
UT Texture Maps link1 or UT Texture Maps link2 - Maps Download Center from UT Texture website, it hosts a huge collection of ut99 maps
i4Games Maps - The Maps download page of i4Games website (choose map types with tabs)
UTzone.de Maps - A discrete collection of ut99 maps (you can find here also ut99 files)
ut.noccer.de maps - A huge collection of ut99 maps by Noccer
UnrealTournament.99.free.fr maps - Another huge collection of ut99 maps for many mods by Medor
ut99maps.gamezoo.org - My map website :) it's a main resource for sniper maps (!) and hosts also DM, CTF and Xloc maps plus a good collection of map packs (no screenshots and direct links)
OTHER MAP WEBSITES
FilePlanet Maps Downloads - A collection of ut99 maps from FilePlanet portal
FPSNetwork UT99 maps - A nice collection of ut99 maps (CTF, DM, JB and MH plus a map pack folder)
Kiddailey Maps - A good list of maps for Unreal Tournament and other FPS games (maps link to Mapraider website)
GameBabana UT99 Maps - A small collection of ut99 maps from GameBanana website
Hellkeeper.net maps - A small collection of ut99 maps
Birdieman UT99 Maps - An interesting collection of ut99 maps by Birdieman
Sidewinder UT Maps - A collection of ut99 maps by Sidewinder
Teasy's UT Portal - Maps and demos for Unreal Tournament by Teasy
GameMaps UT99 Maps - A small collection of ut99 maps, most of these are built by FragnBrag
[ZSZ] clan maps - List of DM maps installed on the [ZSZ] sniper camping server
madrixis.de maps - A small collection of ut99 maps (CTF)
REDIRECTS (.uz files)