v2.1.0 released · 147 mods supported
MODSTACK.
Decoupled, auto-updated, zero friction.
FREE · OPEN SOURCE · 84 MB INSTALL
TRY THE LAUNCHER
Select a pack. Hit sync.
See how Modstack resolves, downloads, and patches modpacks in seconds.
Modstack LauncherIDLE
FEATURED MODPACKS
RLCraftby Shivaxi · v2.9.3
0%0.0 / 1.6 GiB
> [engine] verifying modpack integrity...
WHY MODSTACK
Built for the modded age.
Zero-Drift Syncing
No manual JAR dragging. Mods update in the background while you play. Your pack is always current, always consistent.
Decoupled Environments
Isolated instances prevent registry bloating and version conflicts. Each modpack runs in its own sealed universe.
Discovery Hub
Direct, in-launcher search powered by Modrinth and CurseForge. Browse 10,000+ mods without opening a browser.
CROSS-PLATFORM
Your launcher, everywhere.
macOS13+
Windows10 / 11
LinuxUbuntu / Fedora
Arch LinuxAUR available
Dockerheadless mode