Companion 0.3 is out

Modded Minecraft, held steady.

Modkeel backs up your worlds when your mods change, tells you which mod crashed the game, and fixes it in one click.

Download Source on GitHub

Fabric · NeoForge · Forge  /  1.20.1 to 26.x

Modkeel Companion after a crash: the world is safe, the mod that most likely caused it and a button to disable it. Modkeel Companion pack health screen: the last crash, warnings such as low memory, world copies, mods and lag spikes.

The next start says your world is safe and names the likely cause, and why.

Modkeel Companion

A safety net you drop in the mods folder.

No setup, no config. Everything lives under the Modkeel button on the title screen.

  1. 01
    Worlds survive mod changesBefore a world loads with a different set of mods, Modkeel saves a copy. Restoring never deletes anything.
  2. 02
    The crash, in plain wordsOn the next start: the mod that most likely caused it, how sure Modkeel is, and why.
  3. 03
    One-click fixes you can undoDisable that mod or go back to the last set of mods that worked. Modkeel then checks the fix held.
  4. 04
    Cannot be what breaks your packNo mixins: it does not patch the game. Nothing is sent unless you choose to share (privacy).

For pack authors

Fewer my game crashed, help messages in your Discord.

Your players see which mod broke and fix it themselves. MIT licensed: put it in any pack, public or private, without asking.

  • 0mixins
  • 0config files to ship
  • ~130 KBper jar
  • 7languages

Questions

What it is, and is it safe?

What is Modkeel?

Free, open source (MIT) tools for modded Minecraft. The Modkeel Companion is a mod for Fabric, NeoForge and Forge that backs up worlds when the mods change, names the mod that most likely crashed the game and fixes it in one click. The Modkeel app (Windows, macOS, Linux) gets a mod for the Minecraft version you play, even when its author has not released for it yet, and can move a whole pack to another version. Who makes Modkeel and how the lab tests.

Is Modkeel safe to download?

Every download is built from public MIT source by GitHub Actions, never on someone's computer. Each release comes with SHA256SUMS, a signed build provenance record and a VirusTotal report per file, and the Companion jar can be rebuilt byte for byte from its source. The Companion sends nothing unless you choose to share a report. The app is not yet signed by Microsoft or Apple, so Windows SmartScreen and macOS warn once when you first open it. Download only from GitHub releases, CurseForge (the Companion) or PyPI (the CLI). How to check a download.

Which Minecraft versions and loaders does it support?

The Companion runs on Fabric for Minecraft 1.20.1, 1.21.1, 1.21.11 and 26.x, on NeoForge for 1.21.1 and on Forge for 1.20.1.

A mod hasn't updated to my Minecraft version. What does Modkeel do?

The Modkeel app looks for a build of that mod that runs on your version: the author's own build, an older build that still runs there, or a community port. It checks each one before you get it and tells you how it knows. Packs move as a new instance beside the old one, never over it. All your options, and the community ports the lab tested.

Guides and lab data

Answers from real games, not guesses.

Crashes

Minecraft versions

Mods