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Open Source API Clients using React

A curated collection of the best open source client applications for interacting with and testing APIs. using React.

Lightweight, fast, and open-source API client for developers
  • Stars


    46,408
  • Last commit


    6 hours ago
  • License


    MIT
A modern, user-friendly API client that simplifies API testing and development with a clean interface and powerful features.

Open Source Alternative to:

Powerful API development and testing made effortless
  • Stars


    39,956
  • Last commit


    8 hours ago
  • License


    Apache-2.0
Intuitive API client for REST, GraphQL, and gRPC. Debug, test, and collaborate on APIs with ease across platforms.

Open Source Alternative to:

Fast, secure, offline API client with Git integration
  • Stars


    19,086
  • Last commit


    7 hours ago
  • License


    MIT
A modern API client offering local-only data storage, Git integration, plugin extensibility, and multi-protocol support for developers.

Open Source Alternative to:

Intercept, modify, and debug HTTP(S) requests effortlessly
  • Stars


    6,750
  • Last commit


    13 hours ago
  • License


    AGPL-3.0
A powerful browser extension and desktop app for developers to manipulate network requests, debug APIs, and improve web app testing

Open Source Alternative to:

Unified API development ecosystem for modern teams
  • Stars


    2,607
  • Last commit


    6 months ago
  • License


    AGPL-3.0
All-in-one platform for API testing, documentation, and collaboration, simplifying the entire API development lifecycle.

Open Source Alternative to:

Build APIs like code with Git-native workspace
  • Stars


    1,503
  • Last commit


    16 hours ago
  • License


    Apache-2.0
Offline-first API workspace that unifies specs, docs, tests, and mocks in programmable Markdown blocks. Version control everything in plain text files.

Open Source Alternative to:

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