Install the official Prismlauncher.
Download accounts.json into the PrismLauncher folder:
Linux: ~/.local/share/PrismLauncher/
Linux (Flatpak): ~/.var/app/org.prismlauncher.PrismLauncher/data/PrismLauncher/
Windows: %appdata%/PrismLauncher/
Old README
Prism Launcher is a custom launcher for Minecraft that allows you to easily manage multiple installations of Minecraft at once.
This is a fork of the Prism Launcher and is not endorsed by Prism.
There are development builds available here. These have debug information in the binaries, so their file sizes are relatively larger.
Prebuilt Development builds are provided for Linux, Windows and macOS.
All launcher code is available under the GPL-3.0-only license.
The logo and related assets are under the CC BY-SA 4.0 license.