Basalt Launcher

github.com

What it is

Basalt is an open-source Minecraft launcher written in Rust.

From github.com's own pages, read 12 Oct 2026.

As github.com lists them, read 12 Oct 2026.

Data plate

Price: Free to use
Free plan: Yes
Free trial: No
Runs on: Linux, macOS, Windows
Open source: No
Website: github.com
Accounts and cosmetics: It supports multiple Microsoft accounts with device-code sign-in and silent token refresh, and lets users import, preview, save, and apply skins and manage capes.
Built-in modpack catalog: Yes
Content integrations: It can browse Modrinth and CurseForge with compatibility filtering, dependency resolution, changelogs, and update checks.
CurseForge setup: The README says release builds ship with a CurseForge key, while source builds require a key set at build time or entered under Settings → Integrations.
CurseForge setup limit: Release builds include a CurseForge key, while source builds require users to provide their own key; CurseForge must manually approve API key applications.
Desktop platforms: Basalt describes itself as cross-platform software for Linux, Windows, and macOS, and notes that testing coverage varies between platforms during the beta.
Diagnostics: The launcher separates its logs from game output, allows changing log levels, and can preview final launch arguments.
Downloads and diagnostics: Users can monitor downloads and installs, cancel active tasks, recover interrupted operations, view separate launcher and game logs, and preview final launch arguments.
Checked: 12 Oct 2026

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