Channelstream
Channelstream: A self-hosted WebSocket server with channel broadcasts, presence, and REST operations. Ranked #33 of 55 in WebSocket Tools by our editors (5.4/10); pricing: Free plan; best for small self-hosted apps needing channel broadcasts.
At a glance
- Editor score5.4 / 10
- PricingFree plan
- Best forSmall self-hosted apps needing channel broadcasts
- Free planYes
- Paid fromNone
- Deployment modelSelf-hosted
- Facts checked28 Sep 2026
Where it wins
- Combines browser WebSockets with a JSON REST API for server-side operations
- Supports channel broadcasts, private messaging, presence, and user state
- Includes long-polling support and HMAC-signed application requests
Where it doesn't
- Requires you to run the server in your own infrastructure
- Applications handle authentication and authorization
- JavaScript is the only listed client SDK
Our verdict on Channelstream
Channelstream is an open-source, Python-based real-time communication server for web applications. It suits teams that want to host messaging infrastructure themselves and need browser clients to connect, subscribe to channels, and receive broadcasts. It runs as a standalone process in your infrastructure, with a JavaScript client module and an API explorer included. Applications remain responsible for authentication and authorization, then send signed requests to the server.
Its feature set covers both channel-wide and user-specific communication. Clients can subscribe to channels and receive broadcasts; server-side operations go through a JSON REST API. The server also supports private user messaging, presence events, user state, and message edits and deletions. Long-polling is available as an alternative client endpoint alongside WebSockets. HMAC-signed requests provide a mechanism for securing communication between an application and the server. This combination makes Channelstream a focused option for applications that need real-time messaging primitives without relying on a hosted service.
The main trade-off is operational ownership: deployment is self-hosted, so the team must run and maintain the server and integrate its application-side authentication and authorization flow. The published product details describe a JavaScript client module, but do not establish broader client SDK coverage; teams that require support for other client environments should assess that fit before choosing it. Channelstream is best suited to small self-hosted apps that primarily need channel broadcasts and can manage their own infrastructure. Teams seeking a managed service or an established range of client integrations should consider alternatives.
Channelstream pricing
Channelstream fact sheet
| Free plan | Yes |
|---|---|
| Paid from | None |
| Deployment model | Self-hosted |
| Free concurrent connections | Not verified |
| Pub/sub messaging | Yes |
| Self-hosting available | Yes |
| Client SDKs | JavaScript |
| Protocol support | WebSocket, long polling |
| Deployment | Self-hosted |
| Platforms | Web, Linux |
| Support | Docs |
| Built for | Solo, Small business, Mid-market, Enterprise (editorial estimate) |
| Pricing | Free plan |
| Website | channelstream.org |
| Facts checked | 28 Sep 2026 |
Alternatives to Channelstream
- 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 Channelstream alternatives →
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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