A Minecraft launcher with no ads and no telemetry, offline and Ely.by accounts,
and mods and modpacks from Modrinth, CurseForge, FTB, Technic and ATLauncher in one click
A fork of Legacy Launcher — not endorsed by or affiliated with its team
Screenshots
Features
- No ads, no telemetry. Every banner, promoted server and tracking beacon the upstream launcher shipped has been removed
- Play offline without a Microsoft account, or sign in with Ely.by to get your skin in game without any mods
- Instances — every build has its own mods, resource packs, shaders, worlds, settings and play time, and never interferes with another
- Mod catalog for Modrinth and CurseForge: mods, resource packs, shaders, data packs, with required dependencies installed automatically and update all in one click
- Modpacks from five libraries — Modrinth, CurseForge, FTB, Technic and ATLauncher — installed with the pack's own icon
- Modpack updates with the changelog of every version; your own mods, worlds and settings are kept
- Downloads that finish: files are fetched ten at a time, checked against their hashes and retried when the connection drops
- Discord Rich Presence showing the instance you are playing
- One-click launcher updates
- Crash analysis, local server hosting, per-instance logs, screenshots and server list
- Built-in proxy settings for networks that need one
- English and Russian interface
- Builds for Windows, Linux and macOS (Intel and Apple Silicon)
Comparison
| Feature | Legism | Legacy Launcher | Prism Launcher |
|---|
| Offline mode without a Microsoft account | ✅ | ✅ | ❌ |
| Ely.by accounts | ✅ | ✅ | ❌ |
| No ads or telemetry | ✅ | ❌ | ✅ |
| Separate instances | ✅ | ❌ | ✅ |
| Built-in Modrinth & CurseForge catalog | ✅ | ❌ | ✅ |
| FTB, Technic and ATLauncher modpacks | ✅ | ❌ | ✅ |
| Modpack updates with changelogs | ✅ | ❌ | ✅ |
| Local server hosting | ✅ | ✅ | ❌ |
| Discord Rich Presence | ✅ | ❌ | ❌ |
| Based on | Legacy Launcher | — | PolyMC |
Installation
Stable releases
Download Legism from the official website or the GitHub Releases page:
| System | File |
|---|
| Windows | Legism_windows_installer.exe |
| Windows (portable) | Legism_windows_portable.zip |
| Linux | Legism_linux.tar.gz |
| macOS (Apple Silicon) | Legism_macos_apple_silicon.dmg |
| macOS (Intel) | Legism_macos_intel.dmg |
Every build carries its own Java runtime — nothing else needs installing. Once installed, the launcher updates itself.
Development builds
Every commit to main is built by GitHub Actions; the builds are attached to each run as artifacts. They are not meant for most users and may be broken. You have been warned.
Community & Support
Found a bug or want a feature? Open an issue in GitHub Issues. Pull requests are welcome.
Building from source
Needs a JDK 21. SHORT_BRAND must be something upstream does not publish, so the bootstrap never replaces this build with the original one — the published builds use tgsko.
Portable build (a folder with LL.exe and a bundled JRE):
SHORT_BRAND=tgsko PORTABLE_ENABLED=true ./gradlew :packages:portable:createPortableBuild
Windows installer — prepares the Inno Setup tree, which Inno Setup 6 then compiles:
SHORT_BRAND=tgsko PORTABLE_ENABLED=true INSTALLER_ENABLED=true ./gradlew :packages:installer:prepareInstaller
Linux and macOS builds come from :packages:linux:createLinuxBuild and :packages:dmg:assemble; .github/workflows/build.yml shows the exact steps for every platform.
The product name, brand and support email come from buildSrc/src/main/kotlin/net/legacylauncher/gradle/LegacyLauncherBrandPlugin.kt and can be overridden with the PRODUCT_NAME, SHORT_BRAND and SUPPORT_EMAIL environment variables.
Authors
Other
License
