Valve Software
@valvesoftware • Open source projects from valvesoftware. Use this route to separate flagship concentration from portfolio breadth before you treat a publisher as broadly strong.
Portfolio concentration
84%
Top three share
Shows whether the organization is driven by one breakout repo or several visible projects.
Breadth
30 repos
Visible snapshot
10 repositories updated in the last 90 days.
Leading language
Unknown
Portfolio mix
Unknown (9), C++ (8), C (6)
Average size
1.9K
Stars per repository
Useful for distinguishing one flagship-heavy publisher from a repeatable portfolio.
Updated: 2026-08-03(67d ago)GitHub API fallback30 repositories
84%
of the visible star count comes from this organization's top three repositories.
1.9K
stars per repository in this same snapshot.
Unknown
is the most common language here, with 10 repositories updated in the last 90 days.
Why this rank
This organization stands out because one flagship repo drives 58% of its visible star count.
Flagship share 58%Breakout repo: Proton
Organization pages work best when you separate portfolio breadth from flagship concentration. In Valve Software's case, the visible top three repositories account for about 84% of total stars in this snapshot, which helps explain whether the organization is known for one breakout project or for a broader repeatable portfolio.
The dominant language mix here is Unknown (9), C++ (8), C (6). That makes this page useful not just for popularity checks, but also for seeing what technical shape an organization's public ecosystem actually has.
Top Repositories
| # | Repository | Language | Stars |
|---|---|---|---|
| 1 | valvesoftware/Proton Compatibility tool for Steam Play based on Wine and additional components | C++ | 33K |
| 2 | valvesoftware/GameNetworkingSockets Reliable & unreliable messages over UDP. Robust message fragmentation & reassembly. P2P networking / NAT traversal. Encryption. | C++ | 10K |
| 3 | valvesoftware/gamescope SteamOS session compositing window manager | C++ | 5.2K |
| 4 | valvesoftware/wine Wine with a bit of extra spice | C | 2.1K |
| 5 | valvesoftware/Dota2-Gameplay Public Bug Tracker for Dota 2 | 1.6K | |
| 6 | valvesoftware/Fossilize A serialization format for various persistent Vulkan object types. | C++ | 785 |
| 7 | valvesoftware/counter-strike_rules_and_regs CS:GO | 643 | |
| 8 | valvesoftware/steamlink-sdk | C | 561 |
| 9 | valvesoftware/IndexHardware | 544 | |
| 10 | valvesoftware/dxvk dxvk tree containing branches used by Proton | C++ | 488 |
| 11 | valvesoftware/counter-strike_regional_standings | JavaScript | 346 |
| 12 | valvesoftware/unity-xr-plugin OpenVR plugin for Unity's XR API | C# | 334 |
| 13 | valvesoftware/ArtifactDeckCode Reference code and documentation for Artifact deck codes | PHP | 274 |
| 14 | valvesoftware/steam-devices List of devices Steam and SteamVR will want read/write permissions on, to help downstream distributions create udev rules/etc | 243 | |
| 15 | valvesoftware/vkd3d | C | 230 |
| 16 | valvesoftware/steamvr_unreal_plugin SteamVR Input Unreal Plugin - Documentation at: https://github.com/ValveSoftware/steamvr_unreal_plugin/wiki Sample project (UE4.15-4.23): https://github.com/ValveSoftware/steamvr_unreal_plugin/wiki/sample/SteamVRInputPlugin.zip Sample Project (UE.424+): https://github.com/ValveSoftware/steamvr_unreal_plugin/wiki/sample/SteamVRInputPlugin_UEIntegrated.7z | C++ | 188 |
| 17 | valvesoftware/steamos-compositor SteamOS session compositing window manager | C | 177 |
| 18 | valvesoftware/Moondust | C# | 168 |
| 19 | valvesoftware/Unity | C# | 67 |
| 20 | valvesoftware/openxr_engine_plugins Contains Valve-provided plugins for using OpenXR extensions with various game engines | Mathematica | 61 |
| 21 | valvesoftware/ffts The Fastest Fourier Transform in the South | 39 | |
| 22 | valvesoftware/eigen Fork of Eigen release version 3.4. Adds ability to use alternate threading systems from Open MP. | C++ | 34 |
| 23 | valvesoftware/Dota-Underlords Tracker for issues specific to the Linux and macOS client of Dota Underlords | 30 | |
| 24 | valvesoftware/ExoPlayer An extensible media player for Android | Java | 25 |
| 25 | valvesoftware/tbb Valve mirror of Intel(R) Threading Building Blocks (Intel TBB) GitHub repository | C++ | 22 |
| 26 | valvesoftware/OpenXR-Canonical-Pose-Tool A tool to help OpenXR runtime developers match their poses to other runtimes' poses. | C | 20 |
| 27 | valvesoftware/embree Embree ray tracing kernels repository. | 17 | |
| 28 | valvesoftware/libmysofa Reader for AES SOFA files to get better HRTFs | C | 14 |
| 29 | valvesoftware/VR-Community-Bugs Repository for VR Bugs reported through tickets and community outreach | 8 | |
| 30 | valvesoftware/tracy Frame profiler | 6 |
Next step after the organization read
Open a flagship repository, compare a couple of portfolio leaders, or return to the organization map when you want a broader concentration read.
Learn and methodology
Keep trust-building context reachable, but behind the first data read instead of ahead of it.
How to read this organization snapshot
Total stars are useful as a discovery signal, but they do not tell you whether a team maintains every repository equally. Pair this page with release cadence, maintainer activity, and the flagship concentration shown above before making adoption decisions.
For broader background on GitStar's ranking logic and editorial guidance, see Methodology & Editorial Standards.