e4mc
by vgskye
e4mc lets a host share a locally running world with outside players in one click, because it gives the server a public domain.
What it does
Reverse tunneling is the core of e4mc: it exposes a locally running server to the internet for a limited time, so a world opened to LAN can be reached from anywhere a web page can be opened. The host installs the mod, uses Open to LAN as usual, and receives a domain to pass on to friends.
Only the host needs the mod. Other players join through the shared domain without installing anything. Players on Fabric must also have Fabric API, which is required there. Client and server is the environment, and builds are published for Fabric, Forge, NeoForge and Quilt, across 34 release versions, under the MIT License (open source). Source code and an issue tracker are linked from the project. It requires Fabric API. Snapshot builds are published as well.
Key features
Public domain for LAN worlds
Open to LAN produces a shareable domain, so friends can join without port forwarding or a static address.
Host-only installation
Players who join do not install anything; only the host needs the mod for the tunnel to work.
Domain generated on demand
Each time a host opens a world to LAN, the mod produces a domain that can be passed to friends for that session.
Temporary exposure
The local server is exposed to the internet only while it is open, and the connection ends when the host closes the world.
Compatibility
Latest build for each game version and loader.
26.x5 of 5 versions with builds
1.21.x12 of 12 versions with builds
1.20.x7 of 7 versions with builds
1.19.x5 of 5 versions with builds
1.18.x3 of 3 versions with builds
1.17.x2 of 2 versions with builds
This mod also publishes snapshot builds. Snapshots are not shown in the matrix.
Requirements
Dependencies declared by the latest file for each loader.
Required 1
Optional 1
Required by 1 mod
Use cases
Inviting friends to a single-player world
A host opens a world to LAN and shares the generated domain, so friends on other networks can connect.
How it compares
e4all is a server-side mod under the MIT License, published for 1.18 – 26.3 with the same four loaders, and it requires a server install with an optional client. J4mc is client-side only and uses the All rights reserved license, covering 1.16.2 – 26.3 on Fabric and Forge only. Ngrok LAN is client-side only, released under the MIT License, and limited to Fabric for 1.18.2 – 1.20.2.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| e4mc | Fabric, Forge, NeoForge and Quilt | 1.17 – 26.3 | Client and server | 2026-10-01 |
| e4all | Fabric, Forge, NeoForge and Quilt | 1.18 – 26.3 | Server required, client optional | 2026-10-08 |
| J4mc [Now with invitations] | Fabric and Forge | 1.16.2 – 26.3 | Client-side only | 2026-10-11 |
| Ngrok LAN | Fabric | 1.18.2 – 1.20.2 | Client-side only | 2023-09-26 |
Questions
Does e4mc need to be installed on every player's computer?
Which loaders does e4mc support?
Does SharedWorld need e4mc?
In the catalog
e4mc is one of 5,392 Social mods on ModsFinder, and one of 4,084 Social mods for Fabric. 8,071 mods support Minecraft 26.3.
More from vgskye
Similar mods
What the author says
Open your LAN server to the public, easily and quickly! e4mc is a reverse tunneling reverse proxy for Minecraft. In simpler terms, it's a software that allows you to temporarily expose a local Minecraft server to the internet.
Official listing
- Modrinth page
- modrinth.com/mod/e4mc
- Owner
- vgskye
- Published
- 2023-04-09
- Updated on Modrinth
- 2026-10-01
- Facts verified
- 2026-10-15