The original mod is by Dean "deathz0r" Joseph.
OMG Weapons! (and Monsters) is widely known in the ZDoom community as the mod that started randomizer mods, and despite it's unbalance, it's still a very fun mod that works nicely to make those old PWADS be a new experience each time.
This CLASSIC version of the mod, is meant to balance what we already have, while steadily adding new content to the mix.
It's also fully compatible with ZDoom 2.1.4 (coincidentially also ZDoom Classic ) Skulltag 0.97 onwards, all Zandronum versions and the vast majority of GZDoom versions. In the future it will too be compatible with Eternity (Waiting for custom weapons) and ZDaemon (Waiting for custom missiles and more free states)
Don't worry, i took care of the most terrible bugs commonly assocciated with old versions (weapons never respawning, stuff like MAP07 boss deaths not triggering)
Spoiler: Changelog from OMGWPNS v1Link removed until i get permission from deathz0r