The next-generation mod manager for League of Legends, built by the League Toolkit organization. LTK Manager is the modern successor to cslol-manager, rebuilt from the ground up with a Rust backend and a React-based UI.
| Mod Library | Workshop | Settings |
|---|---|---|
 |
 |
 |
- Mod Library — Install, enable, disable, reorder, and uninstall mods with a visual card-based interface. Supports drag-and-drop installation.
- Profile Management — Create multiple profiles to quickly switch between different mod configurations.
- Workshop (Creator Tools) — Build and package your own mods with a full project editor, layer management, and
.modpkgexport. - Mod Inspector — Preview mod contents and metadata before installing.
- Overlay Patcher — Apply your mods to League of Legends with a single click. Real-time progress tracking keeps you informed.
- Automatic Updates — The app checks for new versions and can update itself in the background.
- Theming — Dark and light themes with a fully customizable accent color and optional backdrop images.
| Format | Description |
|---|---|
.modpkg |
LeagueToolkit mod package — the recommended format with full metadata, thumbnails, and multi-layer support |
.fantome |
Legacy Fantome format — automatically recognized and fully supported |
- Windows 10 or 11 (64-bit). macOS and Linux support is planned.
- League of Legends — a valid game installation.
- Go to the latest release.
- Download the
.msiinstaller (recommended) or the NSIS.exeinstaller. - Run the installer and launch LTK Manager.
- On first launch, the app will attempt to auto-detect your League of Legends installation. If it can't find it, you'll be prompted to select the game folder manually.
- Download a mod in
.modpkgor.fantomeformat from your preferred source. - Drag and drop the file onto the LTK Manager window, or use the install button.
- Enable the mod in your library and click Run to start the patcher.
LTK Manager is open-source under a dual MIT / Apache-2.0 license — you may choose either.
This application bundles the LTK patcher binaries (ltk_patcher_host.exe and ltk_patcher_dll.dll), which perform the actual game injection. They are governed by the LTK Patcher License.
The short version, if you want to reuse them in your own launcher or tool:
- You are free to use, study, modify, and redistribute them.
- Official builds are code-signed by League Toolkit. Unless we've explicitly permitted it, you may not ship them under our signature — strip it, and if you sign, sign with your own certificate.
- Whatever you distribute is on your name: if it gets a code-signing certificate flagged or banned, that certificate must be yours, not ours.
For full terms, see LTK-PATCHER-LICENSE.md.
- Use at your own risk. This software is not endorsed by or affiliated with Riot Games.
- Server support: Officially supports Riot-operated servers. Asian servers and Garena are not officially supported and may experience issues.
Contributions are welcome! Please open an issue or submit a pull request.
If you'd like to build LTK Manager from source or work on the codebase, see the Development Guide.
Developed by the League Toolkit organization.