The APIs are flexible and easy-to-use, supporting authentication, user identity, and complex enterprise features like SSO and SCIM provisioning. Learn more →
Top 23 server-sent-event Open-Source Projects
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InfluxDB
Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.
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algernon
Small self-contained pure-Go web server with Lua, Teal, Markdown, Ollama, HTTP/2, QUIC, Redis and PostgreSQL support
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Restbed
Corvusoft's Restbed framework brings asynchronous RESTful functionality to C++14 applications.
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Swell
Swell: API development tool that enables developers to test endpoints served over streaming technologies including Server-Sent Events (SSE), WebSockets, HTTP2, GraphQL, gRPC, and tRPC.. (by open-source-labs)
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WorkOS
The modern identity platform for B2B SaaS. The APIs are flexible and easy-to-use, supporting authentication, user identity, and complex enterprise features like SSO and SCIM provisioning.
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zilla
🦎 A multi-protocol, event-native proxy. Securely interface web apps, IoT clients, & microservices to Apache Kafka® via declaratively defined, stateless APIs.
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mercure
The Mercure Component allows to easily push updates to web browsers and other HTTP clients using the Mercure protocol. (by symfony)
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SapphireDb
SapphireDb Server, a self-hosted, easy to use realtime database for Asp.Net Core and EF Core
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centrifuge-js
JavaScript client SDK to communicate with Centrifugo and Centrifuge-based server from browser, NodeJS and React Native. Supports WebSocket, HTTP-streaming over Fetch and Readable Stream API, EventSource, WebTransport and SockJS.
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graphql-sse
Zero-dependency, HTTP/1 safe, simple, GraphQL over Server-Sent Events Protocol server and client.
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WebGo
A microframework to build web apps; with handler chaining, middleware support, and most of all; standard library compliant HTTP handlers(i.e. http.HandlerFunc).
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Lib.AspNetCore.ServerSentEvents
Lib.AspNetCore.ServerSentEvents is a library which provides Server-Sent Events (SSE) support for ASP.NET Core
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better-sse
⬆ Dead simple, dependency-less, spec-compliant server-side events implementation for Node, written in TypeScript.
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okhttp-eventsource
Server-sent events (SSE) client implementation for Java, based on OkHttp: http://javadoc.io/doc/com.launchdarkly/okhttp-eventsource
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SaaSHub
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Are you aware of things like websockets and mercure.rocks?
Project mention: Pushpin: Proxy server that pins connections open to build realtime API endpoints | news.ycombinator.com | 2024-03-24
Project mention: Web Server with Support for HTTP, Lua, Markdown, JSX, BoltDB, Redis, PostgreSQL | news.ycombinator.com | 2024-03-11
Most of the speed I believe is from using the server iodine https://github.com/boazsegev/iodine which is a wrapper around facil.io https://facil.io that is built using C.
* `text/event-stream` relies on a modified version of [Azure's fetch-event-source](https://github.com/Azure/fetch-event-source). They handle errors and chunking better than I was. New version has been tested out to 4 billion fragments rendered on a single page with no errors.
Project mention: How is barely anyone talking about the Server-Sent Events API? | /r/webdev | 2023-06-14In addition to what /u/MatthewMob posted, here is another library/ polyfill that I have used in the past: https://github.com/EventSource/eventsource
Project mention: A multi-protocol, event-native edge/service proxy. New Quickstart! | /r/apachekafka | 2023-07-20Hi gang, we’re building a multi-protocol, event-native edge/service proxy called Zilla. Zilla can abstract Kafka topics for web apps, IoT clients and microservices through user-defined REST, Server-Sent Events (SSE), MQTT, or gRPC APIs.
Nakama does not have shared parallelism, look at http://fuse.rupy.se for better scalability.
Project mention: How is barely anyone talking about the Server-Sent Events API? | /r/webdev | 2023-06-14I wrote a library for using SSE with Node and have read the spec front-to-back dozens of times when I was working on it, so I have a fairly good understanding if you have any more unanswered questions!
NOTE:
The open source projects on this list are ordered by number of github stars.
The number of mentions indicates repo mentiontions in the last 12 Months or
since we started tracking (Dec 2020).
server-sent-events related posts
- Datastar v0.12.0 (Htmx+Alpine Alternative)
- A multi-protocol, event-native edge/service proxy. New Quickstart!
- Show HN: A multi-protocol, event-native edge/service proxy
- Interface gRPC services to Kafka with Zilla (announcement)!
- Castle Game Engine Roadmap
- How is barely anyone talking about the Server-Sent Events API?
- gRPC-Kafka Proxying with Zilla API Gateway
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A note from our sponsor - WorkOS
workos.com | 26 Apr 2024
Index
What are some of the best open-source server-sent-event projects? This list will help you:
| Project | Stars | |
|---|---|---|
| 1 | Mercure | 3,741 |
| 2 | pushpin | 3,573 |
| 3 | algernon | 2,630 |
| 4 | facil.io | 2,000 |
| 5 | Restbed | 1,885 |
| 6 | fetch-event-source | 1,324 |
| 7 | Swell | 977 |
| 8 | eventsource | 870 |
| 9 | RIG | 583 |
| 10 | zilla | 485 |
| 11 | mercure | 404 |
| 12 | azure-signalr | 403 |
| 13 | SapphireDb | 400 |
| 14 | centrifuge-js | 377 |
| 15 | graphql-sse | 369 |
| 16 | WebGo | 294 |
| 17 | Lib.AspNetCore.ServerSentEvents | 290 |
| 18 | go-sse | 272 |
| 19 | fuse | 225 |
| 20 | better-sse | 163 |
| 21 | go-sse | 161 |
| 22 | peko | 154 |
| 23 | okhttp-eventsource | 130 |
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