Developer Tools·Standings
Compare WebSocket Tools
WebSocket tools keep two-way connections open so apps can send updates as they happen; compare the signal score out of 10 and whether the tool has a public API, open-source code, or a free tier.
The board also compares free connections, pub/sub messaging, hosting options, client SDKs, protocols, platforms and paid starting prices. Check those details against the apps and deployment setup you need.
- 55 platforms
- 1 with a public API on this page
- 25 with a free tier
- Checked 9 Oct 2026
- 1 FFayefaye.jcoglan.com
A free messaging system for servers and browsers, using WebSocket or HTTP delivery.
- 2 C
Colyseuscolyseus.ioA game framework that syncs server-defined game state to connected players.
- 3 WWrenwrenapp.dev
Wren is a local-first reference manager positioned as an alternative to Zotero for research papers, notes and annotations.
- 4 BBrowserGapgithub.com
An open-source remote browser that streams page pixels to a web interface for viewing or automation.
- 5 LLightstreamerlightstreamer.com
Lightstreamer is an event broker for reliable real-time data delivery to web and mobile applications, handling proxies, firewalls, disconnections, and network…
- 6 MW
Mongoose Web Servermongoose.wsMongoose is a two-file C/C++ networking library and embedded web server for connecting devices and building browser-based device dashboards.
- 7 PC
PubNub Chatpubnub.comPubNub Chat SDK lets developers add custom real-time chat to mobile, game, or web experiences without managing complex infrastructure.
- 8 SSocketClustersocketcluster.io
SocketCluster is an HTTP and WebSockets server environment for building scalable, multi-process real-time systems such as pub/sub and RPC applications.
- 9 SScaledronescaledrone.com
Scaledrone is a real-time messaging toolkit for adding chat, updates, data sync, and collaboration to apps.
- 10 AAnyCableanycable.io
A pub/sub service for web and mobile, with self-hosting, a free plan, and paid plans from $149/month.
- 11 PPieSocketpiehost.com
- 12 UuWebSocketsgithub.com
- 13 PPrimusprimus.ws
- 14 AApinatorapinator.io
A managed pub/sub service for web, iOS, and macOS apps, with a free plan.
- 15 APAutobahn|Pythonautobahn.readthedocs.io
A free Python library for pub/sub on Linux, macOS, and Windows.
- 16 Wwebsocketswebsockets.readthedocs.io
- 17 APAbly Pub/Subably.com
A managed pub/sub service for web and mobile, with a free plan and paid plans from $29/month.
- 18 FW@fastify/websocketgithub.com
A free Fastify library for adding WebSocket support, with JavaScript and TypeScript clients.
- 19 Ffastwebsocketsgithub.com
A free Rust library for WebSocket connections on Linux, macOS, and Windows.
- 20 GWGorilla WebSocketgithub.com
A free Go library for WebSocket connections on Linux, macOS, and Windows.
- 21 PCPusher Channelspusher.com
- 22 RWReconnecting WebSocketgithub.com
- 23 SPsocketify.pysocketify.dev
- 24 TTungstenitegithub.com
- 25 WCwebsocket-clientwebsocket-client.readthedocs.io
Places #1, #2, #3, #4, #5 on this board are open to sponsors. Take #1 · Other ways to advertise
How to choose
How many free connections do I need?
Check the free concurrent connection limit against the number of live connections your app expects. A concurrent connection stays open at the same time as others; limits and paid starting prices can help you compare plans.
Can I host the WebSocket tool myself?
If you need to run the service on your own infrastructure, check whether self-hosting is available and compare deployment models. Managed services and self-hosted tools put different demands on your team.
Does it support pub/sub messaging?
Check for pub/sub if your app needs to publish a message to a channel and deliver it to subscribers. Also compare protocol support and client SDKs, which help apps connect using supported programming tools.
Which platforms does it support?
Confirm that the tool runs on the platforms your team uses. Web, Linux, macOS, Windows, Android and iOS support vary across tools.
What should I compare in the pricing?
Check whether a free plan is available, what the paid plan starts at, and whether a free trial is offered. For example, Ably Pub/Sub lists a free plan and paid plans from $29 per month, while Action Cable is listed as free.
Can I inspect or change the code?
Check the open-source mark and licence if you need to inspect or modify the code. A free plan does not necessarily mean the code is open source.
Questions
What is a WebSocket tool used for?
It keeps a two-way connection open so an app can send and receive updates as they happen.
What does pub/sub mean in a WebSocket tool?
Publish/subscribe messaging lets an app publish a message to a channel so apps subscribed to that channel can receive it.
How do I choose a WebSocket tool for self-hosting?
Check whether self-hosting is available, then compare deployment model, platform support, protocols and client SDKs.
Are WebSocket tools free?
Some list a free plan or free pricing; others have paid plans or pricing on request. Check plan terms and paid starting prices.
What is a free concurrent connection?
It is an open connection active at the same time as other connections. Compare the free connection limit with your app's needs.
Does a free WebSocket plan mean the code is open source?
No. A free plan and open-source code are separate details, so check both.
Some top positions on this board can be paid placements, standing where they were sold. The facts on each platform are not for sale. How we rank · Disclosure