This document compares the official Steam client, the legacy OpenSteamClient project, and the modern SteamFlow client.
| Feature | Official Steam Client | OpenSteamClient | SteamFlow (This Project) |
|---|---|---|---|
| Architecture | Electron (UI) + C++ (Backend) | C++ / Qt | Pure Rust (Backend + UI) |
| RAM Usage (Idle) | ~400MB - 800MB | ~100MB - 200MB | < 50MB |
| Download Engine | CDN + P2P LAN | Standard CDN | Multi-Threaded CDN (Hybrid Architecture) |
| Startup Speed | Slow (Updates, Verifying) | Fast | Instant ("Just-In-Time" Client) |
| Authentication | Full (Steam Guard, QR) | Core (Password, Guard) | Full (Tokens, Mobile App, Guard) |
| Steam Integration | Native | Partial | Deep (PICS, CDN, Cloud, Tickets) |
| Platform Support | Windows, Linux, macOS | Windows, Linux | Linux (First), Windows |
| Development Status | Production | Legacy | Active Alpha |
| Open Source | No | Yes | Yes (MIT) |
SteamFlow was started to explore a truly open-source alternative that doesn't rely on opaque, 32-bit legacy Steam binaries. By using steam-vent, we gain better control over the networking layer, improved performance, and a more modern development stack in Rust.
While OpenSteamClient remains a powerful reference, SteamFlow provides a more robust foundation for a modern, lightweight Linux launcher with superior performance and a smaller footprint.