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Top AI Repos tracks AI repositories on GitHub and answers two different questions about each one: is it moving right now, and would you bet a product on it.
Top AI Repos tracks AI repositories on GitHub and answers two different questions about each one: is it moving right now, and would you bet a product on it.
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..
| Date | Stars |
|---|---|
| 2026-07-24 | 983 |
| 2026-07-25 | 983 |
| 2026-07-28 | 983 |
| 2026-07-30 | 983 |
| 2026-08-06 | 983 |
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Momentum
0.0
growth rate 0.00%/day
<img src="./src/assets/img/horizontal-logo-lockup.png" style="display: block; margin: 10px auto 30px;">
# Swell
[](https://github.com/open-source-labs/Swell/blob/master/LICENSE.txt)
[](https://github.com/getswell/getswell/issues)
[](https://twitter.com/intent/tweet?text=Swell-%20For%20all%20your%20streaming%20API%20testing%20needs&url=https://www.getswell.io&hashtags=SSE,WebSocket,HTTP,API,developers)
Swell is an API development tool that enables developers to test HTTP2, GraphQL endpoints, as well as ones served over streaming technologies including Server-Sent Events (SSE), WebSockets, gRPC, WebRTC, and OpenAPI.
## Getting Started
Visit www.getswell.io to download the latest release.
Swell is available for OSX, Linux, and Windows.
## Highlights
Swell is a one-stop shop for sending and monitoring your API requests:
- Send and monitor streams over HTTP/2 (including SSEs) and WebSockets
- Create GraphQL queries, introspections, mutations, and subscriptions
- Test WebRTC applications over video, audio and text channels
- Stress testing HTTP/2 and GraphQL endpoints
- Create your own HTTP/2 mock server
- Store workspaces of multiple requests for later use
- Import and export workspaces locally
- Compose test suites in JavaScript with Chai-style TDD/BDD assertion syntax
## Considering iterating Swell in the future?
We highly encourage you to check out the `DEV-README.md` in the `docs` folder. We've included a comprehensive guide on the latest updates, which areas would benefit from future iterations, as well as details of core components.
## Core features
- _HTTP2_: Swell supports full HTTP2 multiplexing of requests and responses. HTTP requests to the same host will be sent over the same connection. Swell will attempt to initiate an HTTP2 connection for all HTTPS requests by default, with the ability to revert to HTTP1.1 for legacy servers. Multiple concurrent streams are allowed for each connection.
<img src="./ReadMeGifs/Gifs/HttpTesting.gif" style="display: block; margin: 10px auto 30px; border: 1px solid black;" />
- _GraphQL_: Swell includes full support for all three root types of GraphQL - queries, mutations, and subscriptions – as well as Introspection. Variables are also supported, making creating queries easy.
<img src="./ReadMeGifs/Gifs/GraphQL.gif" style="display: block; margin: 10px auto 30px;" />
- _Server-Sent Events (SSE)_: Initiated by a simple toggle box, Swell displays SSE events one by one as they come in. Similar to HTTP2 streams, multiple open connection streams are allowed for SSE.
<img src="./ReadMeGifs/Gifs/ServerSideEvents.gif" style="display: block; margin: 10px auto 30px;" />
- _WebSockets (WS)_: Swell enables connecting directly to WebSocket servers with an HTTP handshake, with developers able to send messages to the connected WS server directly. All outgoing and incoming messages are displayed in real time.
<img src="./ReadMeGifs/Gifs/Websockets.gif" style="display: block; margin: 10px auto 30px;" />
- _gRPC_: Swell includes full support for all four streaming types of gRPC - unary, client stream, server stream, bidirectional stream.
<!-- -TODO --- This needs to be updated -->
<img src="./ReadMeGifs/Gifs/gRPC.gif" style="display: block; margin: 10px auto 30px;" />
- _tRPC_: Swell includes full support for all methods of TypeScript Remote Procedure Calls including batch call support for queries and mutations as well as subscription
<img src="./ReadMeGifs/Gifs/trpc.gif" style="display: block; margin: 10px auto 30px;" />
<!-- <img src="./ReadMeGifs/Gifs/tRPC-subsExcerpt of 15,606 characters
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Would you bet a product on this? Bounded 0–100 and slow moving.
matched fp:bc354b0bd991fb34, topic:monitoring
matched fp:bc354b0bd991fb34, topic:testing