Swell

Swell is a web-based API development tool specializing in streaming technologies including WebSockets, Server-Sent Events (SSE), HTTP/2 multiplexing, GraphQL (queries, mutations, subscriptions), gRPC streaming, and RESTful APIs. It supports advanced testing capabilities such as built-in JavaScript test suite editor with Chai-style assertions, stress testing for HTTP and GraphQL endpoints, and WebRTC peer-to-peer testing. Swell also features a mock server for frontend development, a smooth Material UI interface, and supports OpenAPI 3.1 specifications. Targeted at developers, it facilitates comprehensive API testing, development, and debugging across multiple protocols with advanced integrations and performance analysis tools.

platform:web form:web-app feature:streaming feature:websockets feature:sse feature:graphql feature:grpc feature:rest-api feature:http2 feature:testing feature:stress-testing feature:mock-server feature:webhooks feature:webrtc feature:api-development target:developers