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FleiSync project artwork

Modrinth · Minecraft mod

FleiSync

Automatic server-side mod sync for the FleiLauncher: the server serves its mods over HTTP, the client syncs by just entering the server IP. No central service.

Choose a version Pick your version below, then grab the matching file.

Quick answer

Which FleiSync release matches 26.3?

Updated last month
Best match for your filters 1.1.0+fabric
Game version 1.16.1, 1.16.2, 1.16.3
Loader Fabric

FleiSync 1.1.0+fabric targets 1.16.1, 1.16.2, 1.16.3 with Fabric. Do not install it on the client. It must be installed on the dedicated server. No extra mods listed for this file.

Where it goes

Is FleiSync required on the client, server, or both?

Do not install it on the client. It must be installed on the dedicated server.

Client Not supported
Dedicated server Required
Loader for this release Fabric
Required install it here Optional supported, not mandatory Not supported do not install here Source doesn’t say do not assume

This file is marked server-only.

Understand client and server requirements Read the Minecraft installation guide

What else does FleiSync 1.1.0+fabric need?

1.1.0+fabric on 26.3. Every mod below is checked against that same setup.

No extra mods listed for this file

This file does not list any required mods. Do not add a library just because a different file uses it.

This file does not list any required or optional mods.

Before you install it

Add FleiSync without breaking your instance.

Built for FleiSync 1.1.0+fabric on 26.3. Pick another file and the loader, install side or required mods may change.

  1. 01

    Stick to this file

    Use 1.1.0+fabric. It targets 1.16.1, 1.16.2, 1.16.3 with Fabric; another release may have different loader, side or dependency requirements.

  2. 02

    Bring the mods it needs

    This file does not list any required mods. Do not add a library just because a different file uses it.

  3. 03

    Put it on the correct side

    Do not install it on the client. It must be installed on the dedicated server.

  4. 04

    Pick the file you checked

    Use the “Get this file” button beside 1.1.0+fabric. It opens that exact file at the source.

About this project

What does FleiSync add?

FleiSync

Automatic mod sync for Minecraft servers — no central service.

FleiSync runs on the server. It answers on the normal game port (no extra port, no port forwarding) and lists the installed mods. The FleiLauncher client only needs the server IP and then syncs mods, Minecraft version and loader fully automatically — directly client ↔ server, with no FleiTec service in between.

Supported

Tested on real dedicated servers (started, manifest answered, normal player connections unaffected):

  • Fabric 1.16.1 – 26.3 (every release in between)
  • Quilt 1.20.1, 1.21.1, 26.1
  • NeoForge 1.20.4 – 26.2
  • Forge 1.18.2 – 26.2

One jar per loader — the same jar works on all listed versions.

How it works

  • GET /fleisync/manifest — mod list with hashes, Minecraft version, loader + version
  • GET /fleisync/mods/<file> — the mod files
  • Everything else on the port stays normal Minecraft traffic
  • No account, no central server, no telemetry

Note

Pure server-side mod. Do not install it on the client — the FleiLauncher handles the sync there.

Project description from Modrinth.

Pick your setup

FleiSync by Minecraft version and loader

Choose the version and loader you play, then open the matching release.

71 available setups

Showing the newest 12 of 39 game versions. Older files are in the list below.

Check the dependencies, then try the file in a copied instance before changing a world you care about.

Recent files

FleiSync versions and loaders

1 of 5 releases match
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Looking for an older file? The official Modrinth project page is in Resources.

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