Tag
10 catalogue entries use this topic; each Project's license policy is labeled separately.
API client that runs in the browser and stays fast
Hoppscotch is an API client that opens in a tab. Requests, collections, environments, and history are all there, and it starts in the time a desktop client takes to check for updates.
Open-source API client that stores collections as plain-text files
Bruno is an open-source desktop API client that stores collections as plain-text Bru files on your filesystem, so teams can version them in Git.
Open-source API client for designing, testing, and mocking APIs
Insomnia is Kong's open-source desktop API client for designing, debugging, and testing REST, GraphQL, gRPC, and WebSocket APIs.
User-friendly command-line HTTP client for testing APIs
HTTPie is an open-source command-line HTTP client for testing APIs and web services from the terminal. Expressive syntax and colorized output keep requests readable.
Local-first desktop API client for REST, GraphQL, gRPC, and more
Yaak is a local-first desktop API client from the creator of Insomnia, with MIT-licensed source code. It sends REST, GraphQL, gRPC, WebSocket, and Server-Sent Events requests from native apps on macOS, Windows, and Linux.
Open-source API client and docs generated from OpenAPI
Scalar is an open-source API platform with an offline-first API client and interactive documentation rendered from the same OpenAPI document.
Open-source API client and HTTP interceptor for testing APIs
Requestly is an open-source API client and HTTP interceptor that modifies network requests, mocks APIs, and runs collections with a one-click import from Postman.
Open-source API client for REST, GraphQL, and WebSocket testing
Firecamp is a free, open-source API development client for testing REST, GraphQL, WebSocket, and SocketIO endpoints from one desktop or web app.
Offline, Git-native API workspace in plain Markdown
Voiden is an offline, Git-native API workspace that keeps requests, tests, notes, and documentation together in plain-text .void files.
API client and collaboration platform
Postman is where most developers first poke at an API, and it grew from that into documentation, mock servers, monitoring, and team workspaces around shared collections.