HAZE
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Every launcher copies. Every launcher tangles. Every launcher gets in the way. Haze doesn't — one copy per mod, one sealed world per instance, and a LAN party that reaches any continent.
Every version, loader and modpack lives in its own sealed environment. Break one setup — the rest never notice.
Hard and symbolic links mean a 50 MB mod used across ten instances occupies exactly 50 MB on disk.
Browse, install and update from Modrinth and CurseForge inside the launcher. Full modpack import & export in both formats.
UPnP and NAT-PMP port mapping handled automatically — your world appears in a friend's LAN list from another continent.
Microsoft, Mojang Yggdrasil, Ely.by and LittleSkin. Sign in once, switch accounts instantly, manage skins in place.
Concurrent downloads with socket reuse for Minecraft, Forge, Fabric, Quilt, OptiFine and the JVM — the interface just stays out of the way.
Yes. Haze Client is completely free and open source under the MIT License. The full source code is available on GitHub.
Haze Client runs on Windows 10 and 11, macOS, and Linux, built on a modern Electron architecture.
Yes. Haze Client automates concurrent downloads and installation for Minecraft, Forge, Fabric, Quilt, OptiFine, and the JVM itself.
Yes. Both stores are built directly into the launcher, and modpack import and export are fully compliant with the CurseForge and Modrinth formats.
Haze handles UPnP and NAT-PMP port mapping automatically, so a world you open appears in your friends' LAN list even when they're on a different network — no server rental required.
Shared files are hard-linked or symbolically linked across instances instead of copied — a 50 MB mod used in ten instances still occupies exactly 50 MB on disk.
Free and open source. Download for your platform and launch in minutes.