OpenSteamClient (Alpha)

A partially open-source Steam client for Linux.

Features

64-bit (but needs 32-bit only steamservice for some functionality)
Lightweight (around 70MB ram use)
No steamwebhelper requirement
All games supported (technically)
VAC supported (you can play, but you might get banned. We're not responsible if you get banned.)
Customize as you wish (Uses your desktop's color scheme)
Wayland supported without need for XWayland
Uses Qt (6)

Todo

Everything marked //TODO in the code
A better logo (I'm not a graphic designer)
Login is a bit janky
User switcher
Global settings
Update steamclient binaries
UI is pretty crude
UI is unstyled
Lots of debug and placeholder things in UI
Download queue
Missing "critical" features like Friends and game artwork
Steam cloud not supported yet
Shader management not supported yet

Screenshots

Please note that the downloads tab doesn't currently list games.

System requirements

Distro requirements

Arch Linux
Ubuntu 23.04 (Lunar Lobster) or newer
Any other distro with Qt6 6.4.2 or greater

Install (Ready-to-go binaries)

Warning: These releases (currently) are only meant for developers. There is an uncountable amount of bugs I've yet to fix.

Debian and debian based distros

Download the deb from the Releases
Double click or install through the command line
You're set! Now launch OpenSteamClient through your application launcher, or use the terminal: opensteam

After installation, read After Install

Arch Linux

We provide an AUR package: opensteam-git

Install it through makepkg or your AUR helper. Use your application launcher to start it, or run opensteam in a terminal.

Then read After Install

After install (Important)

Note: you shouldn't start the official steam client now as it'll override our files and break both installs. Read Restoring ValveSteam below if you want to use the official client again.

Install and Launching (Building from source)

Make sure you have the build dependencies installed.
Clone this repo recursively git clone https://github.com/20PercentRendered/opensteamclient --recursive
mkdir build && cd build
cmake ..
make
Make sure steam is not running.
./opensteam
OpenSteamClient will be installed and launched.

Restoring ValveSteam

If you wish to revert back to the official client, first:

Close OpenSteamClient
Launch opensteam with the --bootstrapper-restore-valvesteam option.

Q&A

pls windows suprort

Although all the technologies we use are cross platform, windows support is not planned.

Partially open source?

This is a GUI for Valve's own Steam Client binaries like steamclient.so and steamservice.so. Those binaries are not open source and Valve doesn't officially support 3rd-party usage of these. This also means we inherit design choices and potential bugs from these files. Due to this, we cannot fix everything, such as the client not conforming to the XDG paths specification.

Additionally, Valve does not provide any headers or code to go along with these binaries, so this project essentially works because of guesswork by lots of community members and projects (Thank you!) (such as open-steamworks, open-steamworks fork by m4dEngi, SteamTracking, protobufs dumped from the steam client and MiniUTL).

What version of Steam's binaries do you use?

The repo includes a copy of steam_client_ubuntu12.vdf, which shows the version and has download paths for the binaries. The urls point to regular zip files, just use unzip.

The client crashes a lot or doesn't start

Delete ~/.local/share/opensteam and try again. Also check that you have a PC that meets the requirements. Also, run OpenSteamClient from the terminal and post the logs in a Github issue clearly describing your situation.

Why such high distro requirements?

The client was made on Arch Linux, for Arch Linux (primarily), so I used whatever features were available.

strzlee/opensteamclient