A Minecraft launcher for Linux and Windows, with its own in-game mod.
- Microsoft sign-in that stays signed in
- Offline accounts with reserved usernames, alongside Microsoft accounts
- Vanilla, Fabric and Quilt instances
- Mods, shaders and resource packs from Modrinth
- Files tab for mods, shaders, resource packs, schematics, worlds and screenshots, with search
- Skin and cape changer with a 3D preview
- Friends: see where they're playing and join them
- Change an instance's version and bring your mods, settings and servers along
- Crash reports you can send to the Oppa team
- Custom background
Fabric 1.21.1, 1.21.4, 1.21.10, 1.21.11, 26.1 to 26.1.2, 26.2 and 26.3. The launcher installs it into matching instances.
- Draggable, resizable HUD with keystrokes, CPS, reach, combo and more
- Block overlay, zoom, free look and a custom crosshair
- Capes from your own images, hats, wings and auras that other Oppa players see
- Friends, invites and one-click joining
- Share a screenshot as a link with one key
- Right Shift opens the menu
Arch Linux: add this to /etc/pacman.conf
[oppa]
SigLevel = Optional TrustAll
Server = https://github.com/kapaisu/OppaClient/releases/download/repo
then
sudo pacman -Sy oppa
Flatpak: add the Oppa source once
flatpak remote-add --user --if-not-exists oppa https://kapaisu.github.io/OppaClient/oppa.flatpakrepo
then search for Oppa in GNOME Software or KDE Discover, or run
flatpak install --user oppa dev.oppa.Launcher
Ubuntu 26.04 or newer: download oppa_<version>_amd64.deb from the latest release, then
sudo apt install ./oppa_*_amd64.deb
Windows: download Oppa-Setup.exe from the latest release and run it.
Needs rust, jdk25-openjdk, gtk4, libadwaita and webkitgtk-6.0.
makepkg -si
Made by kapaisu (q3c on Discord). Source available, see LICENSE.