Hello there Kerr,
Here are some good mods me and the players i Hang out with Enjoy . Perhaps You may Like them as well.
First thing i would recommend , if you would like to Increase the stability of the game especially when using mods, Is to consider using the unofficial
unrealgold 227h patch.It's up to you tho since it may still have some issues especially with older mods and maps , Those issues are very rare tho.
If You Would like to update the graphics a bit with higher resolution textures, there is are
high end texture packs that can do that, these will work with both the unofficial 227h patch as well as a 3rd party opengl render for older official versions. It will make Your experience even more awesome.but it up to you.
Weapon/ Item mods I enjoy based of category:
If you like realistic game play,like counterstrike or cod , there is a few mods that may be of interest such as the current beta of
counterstrike weapons for unreal The classic infiltration and serpentine can be found at
Popular mods , amongst other sources.
If you want a 'more up to date' real weapon mod i may recommend
knifee ( basically UT tactical ops weapon port for unreal) , Although it requires the unofficial patch to operate , but it is a much more well though out mod this mod was created by some very skilled folk , metioned in the readme. top notch.
If you like doom/wolf3d/duke stuff: There is the doom game and doom weapons by dots, it is a classic and complete.
doompawns / doomweps / doomgame
although they don't use custom models, there is
dukeweps If you think of that "crap dosn't have 2d models" it not legit!" Then this
devistator port by []KAOS[]Casey may be more your taste , The author says it a bit buggy , but i think it pretty sweet and worth a look.
If you like the unrealistic overpowered stuff
any mods made by mentalhunter might fit your fancy. As well as the
the ton of stuff in the master2/3 mod from Casey.
if you have 227h , The huge assortment of the different 1000 weapons in the new beta mega mod called
MOD (beta4) by mentalhunter cant be beat for single player fun. All 3 of these collections contain some 'normal' weapons and other gems you will discover.
Then there is the unreal4ever for unreal also on the populat mods page
Popular mods,
this is actually very special to me, as it's the mod that suked me into playing online many years ago. Featuring custom player classes and futuristic , but balanced weapons it another great mod. some users suggest there are are stability issues using this mod. ymmv.
if you like The unreal tournament weapons: many of them have been ported back to unreal.There are many different ports, Due to the massive bulk rush has published , I would recommend his versions
assualt ( all weapons from standard ut) assualtaddon (common custom weapons from ut uzi m79 binslayer ect)
But that just my favorites and some highlights,
but wait ... theres more!
Even tho you only asked for 'good mods'
i cant be the judge of whats good to you.
Here's a list of sites that are loaded with mods for unreal To pick tho:
http://www.hlkclan.net/unreal1/
http://69.90.34.150/unreal/mods/Mutators and Mods/
http://www.oldunreal.com/mods.html
http://www.oldunreal.com/othermods.html
http://udhq.org/
http://www.snipersparadise.net/mods.html
http://hyper.dnsalias.net/files-mods.htm