Tungstenite
Tungstenite: A focused Rust building block for WebSocket clients and servers, not a hosted service. Ranked #37 of 55 in WebSocket Tools by our editors (5.0/10); pricing: Free plan; best for rust applications needing WebSocket client and server APIs.
At a glance
- Editor score5.0 / 10
- PricingFree plan
- Best forRust applications needing WebSocket client and server APIs
- Free planYes
- Paid fromNone
- Deployment modelLibrary
- Facts checked28 Sep 2026
Where it wins
- Provides synchronous and asynchronous client and server APIs.
- Supports TLS through optional native-tls or rustls features.
- Implements RFC 6455 and is tested with the Autobahn Test Suite.
Where it doesn't
- It is a low-level library rather than a batteries-included real-time service.
- Its client SDK and protocol scope are limited to Rust and WebSocket.
- Non-blocking, full-duplex use is directed to tokio-tungstenite.
Our verdict on Tungstenite
Tungstenite is an open-source Rust library for implementing WebSocket clients and servers. It suits developers who want protocol-level APIs inside a Rust application rather than a hosted service or managed real-time platform. The stream-based interface supports synchronous and asynchronous use, with integration available for third-party event loops. It implements WebSocket (RFC 6455), making it a focused choice for applications that need to work directly with that protocol.
TLS is available through optional native-tls or rustls features, and a stream wrapper can switch between plain TCP and TLS. Customizable handshake handling gives applications room to control the WebSocket connection setup. The protocol implementation is tested with the Autobahn Test Suite. These capabilities make Tungstenite useful when the application needs to own its connection handling and fit WebSockets into an existing Rust architecture, rather than delegate those responsibilities to a service.
The trade-off is its deliberately narrow, low-level scope: Tungstenite is a library, not a hosted real-time product, and it does not provide pub/sub. Developers seeking non-blocking, full-duplex functionality are directed toward tokio-tungstenite. The listed support channels are community and documentation, so teams wanting a managed offering or a broad, built-in messaging layer should consider another approach. Choose Tungstenite when Rust client/server APIs, transport options, and handshake control are the priorities; look elsewhere when the goal is an out-of-the-box real-time service.
Tungstenite pricing
Tungstenite fact sheet
| Free plan | Yes |
|---|---|
| Paid from | None |
| Deployment model | Library |
| Free concurrent connections | Not verified |
| Pub/sub messaging | No |
| Self-hosting available | Yes |
| Client SDKs | Rust |
| Protocol support | WebSocket (RFC 6455) |
| Deployment | Self-hosted |
| Platforms | Linux, macOS, Windows |
| Support | Community, Docs |
| Built for | Solo, Small business, Mid-market, Enterprise (editorial estimate) |
| Pricing | Free plan |
| Website | github.com |
| Facts checked | 28 Sep 2026 |
Alternatives to Tungstenite
- Socket.IOAn open-source library for real-time apps, with transport fallback and reconnection built in.9.3
- Ably Pub/SubFeature-rich managed pub/sub, with a free tier and paid plans from $29/month.8.8
- Azure Web PubSubA managed Azure service for real-time apps that need WebSockets, pub-sub, and scale.8.7
See all Tungstenite alternatives →
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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