Sinytra Connector is a compatibility layer mod that allows players to run Fabric mods on NeoForge and Forge, bridging the gap between Minecraft's two largest modding platforms.
One of the most frustrating problems in the Minecraft modding community is platform fragmentation. Some of the best mods are built exclusively for Fabric, while others target only Forge or NeoForge. If your favourite shader-compatible mod or quality-of-life tweak only ships a Fabric version, you used to have two choices: switch your entire modloader or go without. Sinytra Connector eliminates that dilemma entirely. With over 12 million downloads on Modrinth, it has become one of the most relied-upon utility mods in the ecosystem — a clear sign that cross-platform compatibility is something the community desperately needed. Developed by Su5eD under the MIT license, the project has been actively maintained since its initial release in June 2023, with consistent updates through early 2026.
Key Features of Sinytra Connector
- Fabric-to-NeoForge Translation Layer — Sinytra Connector acts as a real-time translator between Fabric mod calls and NeoForge's internal API. This means you do not need to wait for mod authors to port their work — the connector handles the translation automatically. For players who maintain large modpacks, this dramatically expands the pool of available mods without switching loaders.
- Drop-In Mod Installation — There is no complicated configuration or per-mod setup required. You simply place your Fabric mod JARs into the same mods folder alongside your NeoForge mods, and Connector loads them automatically. This makes building mixed-platform modpacks as simple as building a single-loader pack.
- Forgified Fabric API Companion — The project includes a companion mod called Forgified Fabric API, which is a dedicated port of the Fabric API to NeoForge. Many Fabric mods depend on the Fabric API for core functionality, and this companion ensures those API calls are properly handled on the NeoForge side. It acts as a direct replacement, so you never need to install the original Fabric API.
- Connector Extras for Extended Compatibility — For mods that rely on popular third-party libraries like REI (Roughly Enough Items), EMI, or Tech Reborn Energy, the Connector Extras add-on provides additional compatibility patches. This is particularly valuable for kitchen-sink modpacks where recipe viewers and energy systems are core components that many other mods depend on.
- Active Compatibility Tracking — The development team maintains a public mod compatibility thread where players can check whether specific Fabric mods work with Connector. This transparency helps you plan your modpack before downloading dozens of mods, saving time and avoiding crashes during testing.
- Multi-Version Support — Sinytra Connector supports Minecraft 1.20.1 through 1.21.1, covering the versions where the majority of the active modding community currently plays. The 1.20.1 build runs on Forge, while 1.21 and 1.21.1 builds target NeoForge, reflecting the broader community transition between the two loaders.
- Open Source and MIT Licensed — The entire project is open source on GitHub, meaning anyone can audit the code, contribute fixes, or fork it for their own needs. The permissive MIT license ensures there are no restrictions on how you use or distribute the mod in your modpacks.
Screenshots
How to Install Sinytra Connector
- Install NeoForge for Minecraft 1.21.1 (or Minecraft Forge if you are playing on 1.20.1). Use the latest stable version recommended by the loader's official site.
- Download the latest version of Sinytra Connector compatible with your Minecraft version and place the JAR file in your
modsfolder. - Download Forgified Fabric API and place it in the same mods folder. This is a required dependency — it replaces the standard Fabric API, so do not install both. If your modpack manager installs Fabric API automatically, remove it or let Connector handle the conflict.
- Optionally, download Connector Extras if you plan to use mods that depend on REI, EMI, or Tech Reborn Energy for wider compatibility support.
- Drop any Fabric mods you want to use into the mods folder alongside your NeoForge or Forge mods. Launch the game — Connector will detect and load them automatically with no further setup needed.
Requirements & Compatibility
| Requirement | Details |
|---|---|
| Mod Loader | NeoForge (1.21–1.21.1) or Forge (1.20.1) |
| Minecraft Versions | 1.21.1, 1.21, 1.20.1 |
| Required Dependency | Forgified Fabric API |
| Optional Dependency | Connector Extras (for REI, EMI, TR Energy support) |
| License | MIT |
| Source Code | Available on GitHub |
What's New
- Released Beta 14 for the 1.21.1 development branch with stability improvements and bug fixes.
- Bumped the internal Adapter component through multiple versions (2.0.27 to 2.0.36), improving how Fabric mod calls are translated to NeoForge.
- Ongoing compatibility refinements to support a wider range of Fabric mods on the latest NeoForge builds.
- Continued maintenance updates focused on keeping the translation layer aligned with upstream NeoForge and Fabric API changes.
Pros and Cons
Pros
- Eliminates the need to choose between Fabric and NeoForge — use mods from both ecosystems in one instance
- Drop-in installation with no per-mod configuration required
- Actively maintained with frequent adapter updates and a public compatibility tracker
- Open source under the MIT license with a transparent development process
- Massive community adoption with over 12 million downloads
Cons
- Not every Fabric mod is compatible — some mods that use deep Fabric internals may not translate correctly
- Adds a translation layer which may introduce edge-case bugs not present on native Fabric
- Requires Forgified Fabric API as a mandatory dependency, adding one more JAR to manage
- Currently in beta for 1.21.1, so occasional instability is expected
Alternatives to Sinytra Connector
- Forgified Fabric API — A standalone port of the Fabric API to NeoForge. While it is a required companion for Connector, it can also be used independently by mod developers who want to target both platforms from a single Fabric API codebase.
- Connector Extras — An add-on that extends Sinytra Connector's compatibility to cover third-party libraries like REI, EMI, and Tech Reborn Energy that many Fabric mods depend on.
- Architectury API — A multi-platform abstraction layer that mod developers use to write one codebase and compile for both Fabric and Forge/NeoForge, approaching the cross-platform problem from the developer side rather than the player side.
Download Sinytra Connector
| Minecraft Version | Forge | NeoForge |
|---|---|---|
| For Minecraft 1.21.1 | — | Download |
| For Minecraft 1.21 | — | Download |
| For Minecraft 1.20.1 | Download | — |
Always download mods from official sources to stay safe.
Frequently Asked Questions
Does Sinytra Connector work with all Fabric mods?
No — while Connector supports a large number of Fabric mods, not every mod is compatible. Mods that rely heavily on Fabric-specific internals or use mixins that conflict with NeoForge's architecture may not work. The development team maintains a public compatibility thread on GitHub where you can check specific mods before adding them to your modpack.
Do I need to install Fabric alongside NeoForge to use Connector?
No — you do not need to install the Fabric loader at all. Sinytra Connector and Forgified Fabric API handle all the translation internally within NeoForge. Simply install NeoForge as your mod loader and drop the Connector JARs plus your Fabric mods into the mods folder.
Is Sinytra Connector safe to use in large modpacks?
Yes — with over 12 million downloads, Connector is widely used in large modpacks across the community. That said, because it is still in beta for 1.21.1, you should test your specific mod combination before committing to a long-term survival world. Always keep backups of your saves when running beta software.
Does Sinytra Connector affect game performance?
The mod appears to be lightweight in most configurations. It operates as a translation layer at load time rather than constantly running during gameplay, so the performance overhead is generally minimal. However, the actual impact depends on which Fabric mods you load through it and how they interact with NeoForge's systems.
Can I use Connector on Minecraft 1.20.1 with Forge instead of NeoForge?
Yes — the 1.20.1 version of Sinytra Connector is built for Minecraft Forge rather than NeoForge. Starting from Minecraft 1.21, the project targets NeoForge exclusively, reflecting the broader modding community's transition to the NeoForge platform.
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