This is intended to help Minecraft servers who run with mods to make the experience of adding new mods and updating old ones easier. 

For the past few months, I've worked on this with three main goals:

  1. Provide a simple way for server admins to push new updates to their members.
  2. Provide users a simple way to update the mods that are required for play on modded servers.
  3. Remove the terrible experience of installing mods that unexperienced users normally have.

This program uses a client-server method to send files from the server to the client. I've tried to make this as simple as I can to use. Both for the admin as well as the user.  This program includes a full protocol that operates on port 4713 by default.

Supported Features


  • Two update modes: Automatic and Manual.
  • The Automatic update mode will download any updates from the server as soon as the client clicks "Update".
  • The Manual update mode will do the same as automatic but, will include a summery of all of the files that will be deleted, changed, and added.
  • A friendly interface designed with you in mind.
  • Support for alternate Minecraft installations as to not modify your vanilla game.
  • And much more.


  • A simple XML format for discovering mods. A XML file is required for each mod.
  • A mirrored file structure to the client (e.g. "mods/arecool.zip" would be located in the same place as on the client, "mods/arecool.zip").


  • A multi-threaded network system with as few choke points as possible.
  • An expandable network protocol for easy modification.
  • Most things sent over the network are encrypted.
MCModUpdater - Home