Let this issue be a tracker for requested integration with other mods, so I can easily keep track of them.

The latest version of OptiGUI, 2.3.x requires Minecraft 1.20.2.

• QuickShulker: no 1.20.2 release as of Mar 12
• Variant Barrels: (no pr yet)
• More Chest Variants: (no pr yet)
• Variant Vanilla Blocks: (no pr yet)
• Variant Chests: (no pr yet)
• Farmer's delight: no 1.20.2 release as of Mar 12 + I haven't yet checked out the mod and its GUIs
• Linked Storage: no 1.20.2 release as of Mar 12
• Variant Sticks & Stuff: (no pr yet)
• Variant Lecterns: xanthian/VariantLecterns#2
• Variant Crafting Tables: (no pr yet)
• Variant Grindstones: no 1.20.2 release as of Mar 12
• VariantCartographyTables: no release on GH/MR/CF

The first alpha builds of OptiGUI 3 are finally here for 1.20 and 1.21!

OptiGUI 3 uses NBT instead of selectors, which is way more compatible with other mods out-of-the-box. Press F12 while the inventory is open, and OptiGUI will generate and copy a JSON Resource to your clipboard.

The only unsupported mod from this list is QuickShulker, which will need a 3rd yet-to-be-written mod.