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Java Mods

Sinytra Connector

Sinytra Connector is a compatibility layer that runs Fabric-loader mods on NeoForge, with a separate older build for Forge. It patches mod jars rather than adding content of its own.

By Sinytra via Modrinth.

MinecraftHub-generated editorial cover for Sinytra Connector
Section
Java Mods
Platform
Java
Checked
Updated
Versions
1.20.1, 1.21, 1.21.1, 26.1.2

What Sinytra Connector works with.

PlatformJava Edition
LoadersForge, NeoForge
Minecraft versions1.20.1, 1.21, 1.21.1, 26.1.2
EnvironmentClient, Server

Sinytra Connector is a compatibility layer for Minecraft Java, not a mod that changes gameplay by itself. It patches Fabric-loader mod jars at load time so they run on NeoForge, and on a separate older build, on Forge. Install it alongside its required dependencies, drop Fabric mods into the mods folder, and NeoForge or Forge loads them like native mods.

What Sinytra Connector does

Connector rewrites a Fabric mod's entry points and Mixin patches at load time so they run inside NeoForge's or Forge's classloading and event system instead of Fabric Loader's. It's maintained by the Sinytra team, the same group behind Forgified Fabric API, a NeoForge port of the Fabric API that Connector depends on. Connector does not port a mod's Fabric API calls itself, which is why Forgified Fabric API has to be installed alongside it.

Installing Sinytra Connector and its dependencies

Install NeoForge first for the current release line, since that's where active development happens. Connector needs two other mods to load at all.

  • Forgified Fabric API, required, a NeoForge port of the Fabric API.
  • Launchpad, required, a NeoForge and Forge loading library from the same team that bootstraps Connector before the game starts.
  • Connector Extras, optional, adds compatibility patches for additional third-party mod libraries and APIs beyond what Connector covers on its own.

With those in place, drop the Fabric mods you want into the same mods folder as Connector, no extra configuration needed for most mods. Server installs follow the same steps: Connector, Forgified Fabric API, and Launchpad on the server, plus whichever Fabric mods the modpack calls for.

Mod compatibility and known issues

Sinytra runs an automated compatibility checker called Probe against hundreds of Fabric mods on every release and publishes the results. The run against the 26.1.2 build cleared 354 of 400 tested mods, though a mod passing that jar-patching test can still misbehave in game, and results shift from release to release as both Connector and the tested mods update.

  • Known incompatible on the current NeoForge test run: ReplayMod, Carpet, ViaFabricPlus, Skyblocker, Friends & Foes, and owo-lib.
  • Sodium does not run through Connector on either loader. It conflicts with the early loading screen Connector relies on; Embeddium is the working alternative.
  • The project's own compatibility list and its GitHub discussions are the most current source for a specific mod, since the picture changes with every release.

Sinytra Connector Mod for Minecraft

Questions about Sinytra Connector.

5 questions

What does Sinytra Connector do?

Connector is a compatibility layer that patches Fabric-loader mod jars so they load on NeoForge, and on a separate older build, Forge. It doesn't add gameplay content itself. Install it with Forgified Fabric API and Launchpad, then drop Fabric mods into the mods folder and NeoForge treats them like native mods.

Which Minecraft version does Sinytra Connector support?

The active NeoForge build reaches 26.1.2, the project's current release focus, with 1.21.1 kept on long-term support for critical fixes only. A separate Forge build exists too, but it has been frozen at 1.20.1 since mid-2026 with no newer Forge target planned.

Does Sinytra Connector work with Sodium?

No. Sodium conflicts with the early loading screen Connector relies on, and it's a long-documented incompatibility on both the Forge and NeoForge builds. Use Embeddium, or Sodium's own NeoForge or Forge port, instead of trying to load Sodium itself through Connector.

How many mods actually work through Sinytra Connector?

The project runs automated compatibility tests against hundreds of Fabric mods on every release. The most recent run, against the 26.1.2 build, cleared 354 of 400 tested mods. Passing that test doesn't guarantee zero in-game issues, and results shift release to release as mods update.

What does Sinytra Connector require to run?

Two other mods: Forgified Fabric API, a NeoForge port of the Fabric API, and Launchpad, a loading library the same team maintains. Both are required dependencies. Connector Extras is an optional third mod that widens compatibility with certain third-party libraries.

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