Atlauncher

ATLauncher integrates modpacks and supports installing and managing Minecraft game instances through its launcher.

github.com/ATLauncher/ATLauncher
Atlauncher homepage screenshot

About Atlauncher

ATLauncher is an open-source launcher for Minecraft that integrates multiple different modpacks to download and install modpacks and manage game instances. The repository builds for Windows, Linux and OSX, supports custom themes, and requires Java 8 or above with Gradle to build.

Key features

  • Download and install integrated Minecraft modpacks
  • Manage Minecraft game instances through launcher
  • Support custom themes extending Dark or Light base
  • Build outputs for Windows, Linux and OSX
  • Open source codebase available on GitHub
Best for: Minecraft players who want to download, install and manage modpacks through a single launcher.
Good for
  • Integrates multiple Minecraft modpacks for download and installation
  • Open-source code available in public repository
  • Provides build outputs for Windows, Linux and OSX
Watch out for
  • Requires Java 8 or above to build
  • Creating custom themes may require trial and error

Atlauncher at a glance

Type
Open-source project
Pricing
Not confirmed. Check the site
Open source
Yes · Source code
Language
English
Last checked
Oct 5, 2026 · Online when checked
Listed
Oct 5, 2026

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Atlauncher FAQ

What is ATLauncher?
It is a launcher for Minecraft that integrates multiple different modpacks to download and install modpacks.
What is required to build ATLauncher?
Java version 8 or above, with Java 8 recommended. Other needs are provided by Gradle and accessed using the Gradle wrapper.
Does ATLauncher support custom themes?
Yes. Create a theme file in src/main/java/com/atlauncher/themes/ extending Dark, Light, or ATLauncherLaf.
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