(NO LONGER DEVELOPED) Minecraft Forge Server Software implementing the Spigot/Bukkit API, formerly known as Cauldron/MCPC
Java Other
Latest commit 71531cf Aug 25, 2016 @Robotia Robotia committed on GitHub Upgrade special source version


Thermos (Те́рмос)(TH啦)

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Thermos Graph

Build Status Minecraft Forge v10.13.4.1614 Minecraft v1.7.10 Java JDK v1.8 Spigot 1.7.10 Snapshot

What's Thermos?

Thermos is a fork of KCauldron, a craftbukkit forge server for Minecraft 1.7.10. After periods of inactivity on KCauldron's GitLab concerning major issues, Thermos was created to allow active members of the Minecraft coding community to optimize it and provide fixes in a timely manner.

We hope to eliminate all issues with craftbukkit forge servers. In the end, we envision a seamless, low lag Thermos experience.

Advantages over KCauldron:

  • Lag-lowering optimizations
  • Better world protection (Forge stuff doesn't bypass Bukkit plugins!)
  • Many patches that KCauldron didn't get from Spigot
  • Dupe glitch fixes


Click here


You can download the pre-built packages from here.

Thermos is still in beta and you may encounter issues in using it with your server. You have been warned!

P.S. PLEASE look at the release notes before downloading! 😄

Installing WarmRoast

Tutorial Video


Feel free to drop in on the CyberdyneCC Discord chat here


You can pledge to support Robotia and his work through a monthly Patreon donation or a one-time PayPal donation.


Please read the guide on how to contribute - Thermos always needs improvements 😄

Build Requirements

  • Java 8u101 JDK or higher
  • JAVA_HOME defined on your OS

Building CyberdyneCC/Thermos

  • Checkout project
    • You can use IDE or clone from console: git clone https://github.com/CyberdyneCC/Thermos.git
  • Setup
    • Auto: setup.sh
    • Manual: git submodule update --init --recursive
  • Build
    • This process downloads minecraft and apply patches
    • If you have gradle integration in IDE - you can still use gui
    • Auto: build.sh
    • Manual: ./gradlew setupCauldron jar

All builds will be in build/distributions

Updating sources

  • Update sources
    • git pull origin master
  • Re apply patches & build binaries
    • ./gradlew clean setupCauldron jar

Known Caveats, use provided fixes at your own risk.

✔ Aether II: isDonor function can lock up servers. Fixed

✔ BungeeCord: It's been known for years that BungeeCord barely works with Forge & seems that it'll never be supported officially. Fixed

✔ BuyCraftX: Doesn't seem to work with Thermos, info on why it doesn't is unknown currently. Fixed

✔ Citizens: Not compatible with forge Fixed

✖ Lilypad: 100% not compatible with Forge, lead developer has declined to add support when asked.

✔ DraconicEvolution: P keybind will bypass protection. Fixed

✔ Factions + MassiveCore: No protection from Forge items. Fixed

✔ TuxTwoLib: Didn't work with Thermos at all Fixed

✔ Mobius / Opis: You can download fixed version HERE

✔ SkinsRestorer: Latest working version is 10.4.4