Radium Reforged is an unofficial fork of Lithium by CaffeineMC, brought to Forge. Unlike Canary, it does not switch off important Lithium optimizations.
It runs on Forge and NeoForge across Minecraft 1.18.1 - 1.21.1 and is free and open source. Looking for Lithium-style optimization on a Forge Minecraft server? Radium Reforged is a one-click install from the panel.