Forge Config [LegacyFabric]
by ModdedMITE
Forge Config [LegacyFabric] ports the Forge configuration system to Legacy Fabric so that mods built on it can read and write their settings on 1.6.4.
What it does
The library gives mod developers Forge's full config system on Legacy Fabric and FishModLoader. Mods that depend on Forge configs can use it without the Forge loader itself, and it runs with the 1.6.4-MITE and BTWCE3.x builds of the game, which removes the need for two separate helper mods.
The port was made from Forge Config API 9.11.1.1345, though the author states the code was written without referring to Forge Config API. Because Forge configs differ significantly between Minecraft versions, the author recommends the library be used on 1.6.4 whenever possible. The only published build is 1.0.0 for 1.6.4, released 2026-01-05 under the GNU Lesser General Public License v2.1 only. The source code and issue tracker are public.
Key features
Declared settings
Mods declare their settings through the Forge configuration API, so values are read and saved the same way as on Forge.
Shared config code
Developers can reuse config code written for Forge mods instead of rewriting it for another loader.
Single helper mod
Mods that need Forge-style configs can depend on this one library rather than on two separate helper mods.
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Porting Forge mods
Developers porting a Forge mod to Legacy Fabric can keep the config code they already wrote instead of rewriting it.
Who it’s for: Mod developers building for Legacy Fabric or FishModLoader on Minecraft 1.6.4, and server owners running mods that rely on Forge-style configs.
How it compares
Legacy Fabric API is open source under the Apache License 2.0, runs on Legacy Fabric and Ornithe for 1.3 – 1.12.2, and is optional on the client or server. Waila [BTW Port] is a Legacy Fabric mod for 1.6.4 that runs on client and server together, and it is not open source, being released under Creative Commons Attribution Non Commercial Share Alike 4.0. Legacy Fabric API fixes for BTW is open source under CC0 1.0 Universal, for 1.6.4 on Legacy Fabric, and optional on either side. Forge Config [LegacyFabric] is a config library rather than an API or a HUD, and is open source under the GNU Lesser General Public License v2.1 only.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Forge Config [LegacyFabric] | Legacy Fabric | 1.6.4 | Client or server, optional | 2026-01-05 |
| Legacy Fabric API | Legacy Fabric and Ornithe | 1.3 – 1.12.2 | Client or server, optional | 2026-10-08 |
| Waila [BTW Port] | Legacy Fabric | 1.6.4 | Client and server | 2026-06-10 |
| Legacy Fabric API fixes for BTW | Legacy Fabric | 1.6.4 | Client or server, optional | 2026-01-07 |
Questions
Which game version is supported?
Does the library work with BTW builds?
In the catalog
Forge Config [LegacyFabric] is one of 3,514 Library mods on ModsFinder. 328 mods support Minecraft 1.6.4.
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What the author says
ForgeConfig mod is a modding library for mod developers that provides Forge's whole config system to other modding ecosystems. Allows developers to use Forge configs on LegacyFabric & FishModLoader. This mod is similar to the Forge Config API Port, although it was developed without referencing the Forge Config API…
Official listing
- Modrinth page
- modrinth.com/mod/forge-config-legacyfabric
- Owner
- ModdedMITE
- Published
- 2026-01-05
- Updated on Modrinth
- 2026-01-05
- Facts verified
- 2026-10-15