OptiGUI 2.3.0-beta.9+1.21 is a beta file of the Minecraft mod OptiGUI for Fabric, Quilt, made for Minecraft 1.21, 1.21.1. It was published on November 13, 2025 and is 0.6 MB in size. Pre-release builds can contain bugs — back up your world before installing. For the full description, screenshots and every other version, visit the OptiGUI mod page.
How to install: Put the .jar into the mods folder (.minecraft/mods) and start Minecraft with the matching mod loader profile.
