Open source api-client projects
Every project in the registry tagged api-client, ranked by real GitHub adoption.
Sleek, intuitive API development and testing platform
Lightweight, fast, and open-source API client for developers
Powerful API development and testing made effortless
OpenAPI Generator allows generation of API client libraries (SDK generation), server stubs, documentation and configuration automatically given an OpenAPI Spec
Open-source API documentation and testing platform
Build product integrations with 500+ APIs in hours
Intercept, modify, and debug HTTP(S) requests effortlessly
A RWKV management and startup tool, full automation, only 8MB. And provides an interface compatible with the OpenAI API. RWKV is a large language model that is
Official Notion JavaScript Client
👨🚀 Turn API specifications into production-ready SDKs, validators, mocks, and more. 20+ plugins. Millions of weekly npm downloads. Used by Vercel, OpenCode,
Modern command-line HTTP client for the API era
An API Client package to access the APIs for NBA.com
A simple API client (postman like) in your terminal
The power of curl, the ease of use of httpie.
PHP Curl Class makes it easy to send HTTP requests and integrate with web APIs
OpenAI API + Ruby! 🤖❤️ GPT-5 & Realtime WebRTC compatible!
API Dash is a beautiful AI-powered open-source cross-platform (Desktop & Mobile) API Client built using Flutter which can help you easily create & customize you
Offline-First Minimalistic HTTP & Socket Testing Client for the Web & Desktop
Unified API development ecosystem for modern teams
The agent that turns websites into APIs!
Notion API client SDK, rewritten in Python! (sync + async)
Terminal API client for HTTP, GraphQL and gRPC. Plain .http files you can diff and version, with workflows, mocks, profiling, tracing, OpenAPI import, SSH tunne
Build APIs like code with Git-native workspace
C++ Discord API Bot Library - D++ is Lightweight and scalable for small and huge bots!
⚡️ A fully-featured and blazing-fast JavaScript API client to interact with Algolia.
Twitter API for Laravel 5.5+, 6.x, 7.x & 8.x
All-in-one native macOS AI chat application for virtually any AI provider
Node.js & JavaScript SDK for Binance REST APIs & WebSockets, with TypeScript & browser support, integration tests, beautification & more.
Chapar is a simple and easy to use api testing tools aims to help developers to test their api endpoints. it support http and grpc protocols.
⚡️ A fully-featured and blazing-fast PHP API client to interact with Algolia.
A delightful and complete interface to GitHub's amazing API
A Discord API wrapper library made in C
Client for HashiCorp's Vault
Python Docker API client based on asyncio and aiohttp
SDKs for CoinAPI & FinFeedAPI
Python client implementation for qBittorrent's Web API
Mikrotik RouterOS API PHP client for your applications
Related tags
Frequently asked questions
How many open source api-client projects are there?
This registry tracks 37 projects tagged api-client, with 299,442 GitHub stars between them. The most-adopted is Hoppscotch at 80,720 stars.
Are these api-client projects free to use?
Yes — 34 of the 37 carry an explicit open-source licence across 5 distinct licences, so there is no licence fee. Where a project also sells a hosted or enterprise version, the self-hosted path remains free.
Which api-client project should I choose?
The list above is ranked by GitHub stars, but stars measure attention rather than fit. Check three things on each card: the licence (permissive versus copyleft), the language it is written in, and the last-push date — a high-star project that has not been pushed in a year is a liability.
Are these api-client projects still maintained?
32 of the 37 were pushed in the last 90 days, and every card shows its exact last-push date so you can see the rest. Sort your shortlist by that date before committing to a migration.