Trending Projects

Protocol Buffers for structured data serialization

gRPC is a high-performance RPC framework for building connected systems.

RSSHub delivers millions of contents aggregated from all kinds of sources

TypeScript-first schema validation with static type inference

Open-source IDE for API exploration and testing

Type-safe API framework for building full-stack applications

Open-source API client for debugging, designing, testing, and mocking APIs with cross-platform support and multiple storage options.

Static site generator for API documentation

ZXing barcode scanning library for Java and Android

Hasura GraphQL Engine provides secure, real-time GraphQL APIs for data sources with access control and event triggers.

OpenAPI Specification for describing REST APIs in YAML/JSON

LLM API management & distribution system with unified API for multiple models

Web APIs for Django

Python wrapper for Telegram Bot API

Swagger UI generates interactive API documentation from OpenAPI specs.

YApi is a powerful API management platform for creating, testing, and documenting APIs with mock server and automation features.

Python library for parsing Honkai: Star Rail data from Mihomo API

WeChat personal account API for Python with bot capabilities

PostgREST provides a REST API for any PostgreSQL database, enabling fast and standards-compliant API generation.

API client/server generator for OpenAPI specs

Generate beautiful API docs from OpenAPI specs

Microsoft REST API Guidelines for designing and building APIs

Curated list of public APIs from around the web

Python library for downloading financial data from Yahoo! Finance

Bilibili API collection and documentation

GraphQL reference implementation for JavaScript

gRPC to REST/JSON proxy generator for Go

GraphQL client for JavaScript/TypeScript apps with caching and developer tools

Mock.js generates simulated data for frontend development and testing.

An open-source data indexing framework for building decentralized web3 applications.

Hurl is a Rust-based CLI tool for running and testing HTTP requests using a plain text format.

A desktop API client to organize and execute REST, GraphQL, WebSockets, SSE, and gRPC for vibe coders.

A common library for parsing, formatting, and validating international phone numbers in Java, C++, and JavaScript.

A C++11 library that provides seamless operability between C++ and Python codebases.

A template-driven code generation tool for creating documentation, API clients, and server stubs for OpenAPI/Swagger APIs.

Industry-standard API mocking library for JavaScript developers to test their applications.

Generate type-safe code from SQL for Go, Kotlin, Python, and other languages.

Upptime is a GitHub Actions-based uptime monitor and status page for your projects and services.

A popular JavaScript HTTP client for Node.js and browsers, maintained by the ForwardEmail team.

A simple PHP API extension for DateTime with a focus on developer productivity and convenience.

A cross-platform, safe, pure-Rust graphics API for building high-performance, GPU-accelerated applications.

A tiny and elegant JavaScript HTTP client based on the Fetch API, providing a simple and lightweight way to make HTTP requests.

An advanced Twitter scraping & OSINT tool written in Python that doesn't use Twitter's API

An API testing agent that generates tests, mocks, and stubs to help developers build better APIs.

Vitest is a next-generation testing framework powered by Vite, optimized for fast and efficient testing.

Amplication streamlines and accelerates large-scale software development with AI-driven workflows, code generation, and standardized delivery.

A curated collection of free API services for developers to leverage in their projects.