Cardboard (formerly called Bukkit4Fabric) is an implementation of the popular Bukkit/Spigot/Paper Modding API for FabricMC

Minecraft	Supported?	Download	Build Status
1.17-snapshots	❌ UNSUPPORTED	Download for 1.17 (old)
1.16.4	✅ SUPPORTED	Download for 1.16.x
1.16.2/1.16.3	❌ UNSUPPORTED
1.15.x	❌ UNSUPPORTED
1.14.x	❌ UNSUPPORTED

We inherit the dual (L)GPLv3/MIT license from Paper. See Paper's License for what code is under MIT. SrgLib is also licensed under MIT.

We do support using Spigot's net.minecraft.server classes. Classes and Fields will automatically remap to their intermediary counterparts (Including Reflection!)

There is a progress indicator in the Discord. Although, if you're not in the Discord: Progress can be determined by the completeness of the to-do lists on the two pinned issues.

• BukkitTeam, Spigot, and Paper for their work on the API.
• Glowstone for the library loader.
• md_5 for the SpecialSource mapping tool
• Techcable & Orion for the SrgLib tool
• Phase for the MinecraftMapping tool

Thanks to Apex Hosting for sponsoring this project, get a Minecraft server by clicking on the banner below: