The Quilt Project

The Quilt project is an open-source, community-driven modding toolchain designed primarily for Minecraft. By focusing on speed, ease of use and modularity, Quilt aims to provide a sleek and modern modding toolchain with an open ecosystem.

Quilt is a project that was born out of a need for change in the Minecraft modding ecosystem. Our teams contain many experienced members of the modding community, providing a level of familiarity that helps us to avoid the mistakes of the past — whether those mistakes relate to community management, diversity and inclusivity, project governance or transparency. For more information on how we hope to do this, please see our “about” pages.


Quilt is currently in beta. Here be dragons — there may be issues, but we’ll fix them as quickly as we can!

If you’d like to help us test Quilt, please feel free to install it, try it, and let us know how you get on!


Quilt is community-driven, and couldn’t exist without its users and contributors. We care about our community; whether you’re a member of our community spaces, an occasional contributor to one of our projects or simply a user: Quilt exists for your needs — not in spite of them.


Quilt has the extra features and tools your mods need to succeed. From a rich library of modules that help you to write more compatible mods with less effort, to one of the most accurate decompilers provided by any Minecraft modding toolchain, you can be sure that your mod is in good hands.

Join the Community

Please feel free to join us on one of our official community spaces by clicking the buttons below. Please note that all users of our community (and development) spaces are expected to abide by our Code of Conduct and our rules. We recommend that you read and become familiar with them before joining or interacting with us.

Get Involved

There are lots of ways you can help us out, even if you aren’t a developer. A list of currently open positions can be found on the openings page.

If none of the available openings speak to you, or you want to contribute without joining a team, the best thing to do is join us on GitHub or the Toolchain Discord Server. There’s plenty of things to do, so we can always use more help!

Latest Posts

Five vulnerabilities found in mrpack installer implementations

Ambre Bertucci

February 4, 2023

On Tuesday, 31st January, a member of the Quilt team discovered path traversal vulnerabilities in five different mrpack implementations, affecting MultiMC, PolyMC, Prism Launcher, ATLauncher and mrpack-install.

This article serves as a write-up for the vulnerabilities, and the affected versions.

Adding Cloudflare Web Analytics to


November 26, 2022

Today, we’re adding the Cloudflare Web Analytics to We know that analytics tools have a reputation of being both greedy and careless with user data, and that some people might feel that we’re putting meaningless numbers before their privacy, which, given the general perception of web analytics, is not an unfair assumption. However, we have put thought and care into the decision, and so this article explains what data is collected, how we could use it, and how we collect it without impacting your privacy.

October: Month of the 'toberfests


October 2, 2022

October is most well known as a month of spookiness, of sugary treats, and of pumpkins (Pineapples, excuse me). But for developers, October is also a month of what I like to call “‘toberfests”, and today we’re excited to announce that Quilt will be participating in two of them: Hacktoberfest and Modtoberfest.