api

A collective list of free APIs

FastAPI framework, high performance, easy to learn, fast to code, ready for production

Vim-fork focused on extensibility and usability

Open-Source API Development Ecosystem • https://hoppscotch.io • Offline, On-Prem & Cloud • Web, Desktop & CLI • Open-Source Alternative to Postman, Insomnia

Dear ImGui: Bloat-free Graphical User interface for C++ with minimal dependencies

Get a full fake REST API with zero coding in less than 30 seconds (seriously)

🚀 Strapi is the leading open-source headless CMS. It’s 100% JavaScript/TypeScript, fully customizable, and developer-first.

A lightning-fast search engine API bringing AI-powered hybrid search to your sites and applications.

LocalAI is the open-source AI engine. Run any model - LLMs, vision, voice, image, video - on any hardware. No GPU required.

免费大模型API，支持免费调用GPT、DeepSeek等主流模型，免费额度10000点，每日刷新！另付费价格最低官方1-2折！

A unified trading API with more than 100 crypto exchanges and prediction markets in JavaScript / TypeScript / Python / C# / PHP / Go / Java / Rust

🧙‍♀️ Move Fast and Break Nothing. End-to-end typesafe APIs made easy.

The open-source, cross-platform API client for GraphQL, REST, WebSockets, SSE and gRPC. With Cloud, Local and Git storage.

An open-source engine that turns continuous content streams into search and monitoring. Durable ingestion, hybrid search, alerts, and plugins for formats, models and business rules.

🥧 HTTPie CLI — modern, user-friendly command-line HTTP client for the API era. JSON support, colors, sessions, downloads, plugins & more.

The flexible backend for all your projects 🐰 Turn your DB into a headless CMS, admin panels, or apps with a custom UI, instant APIs, auth & more.

LLM API 管理 & 分发系统，支持 OpenAI、Azure、Anthropic Claude、Google Gemini、DeepSeek、字节豆包、ChatGLM、文心一言、讯飞星火、通义千问、360 智脑、腾讯混元等主流模型，统一 API 适配，可用于 key 管理与二次分发。单可执行文件，提供 Docker 镜像，一键部署，开箱即用。LLM API management & key redistribution system, unifying multiple providers under a single API. Single binary, Docker-ready, with an English UI.

Beautiful static documentation for your API

Blazing fast, instant realtime GraphQL APIs on all your data with fine grained access control, also trigger webhooks on database events.

网易云音乐 Node.js API service

Web APIs for Django. 🎸

短信转发器——监控Android手机短信、来电、APP通知，并根据指定规则转发到其他手机：钉钉群自定义机器人、钉钉企业内机器人、企业微信群机器人、飞书机器人、企业微信应用消息、邮箱、bark、webhook、Telegram机器人、Server酱、PushPlus、手机短信等。包括主动控制服务端与客户端，让你轻松远程发短信、查短信、查通话、查话簿、查电量等。（V3.0 新增）PS.这个APK主要是学习与自用，如有BUG请提ISSUE，同时欢迎大家提PR指正

REST API for any Postgres database

YApi 是一个可本地部署的、打通前后端及QA的、可视化的接口管理平台

OpenAPI Generator allows generation of API client libraries (SDK generation), server stubs, documentation and configuration automatically given an OpenAPI Spec (v2, v3)

A complete and graceful API for Wechat. 微信个人号接口、微信机器人及命令行微信，三十行即可自定义个人号机器人。

Microsoft REST API Guidelines

Checklist of the most important security countermeasures when designing, testing, and releasing your API

Automate browser based workflows with AI

lightweight, idiomatic and composable router for building Go HTTP services

A WhatsApp client library for NodeJS that connects through the WhatsApp Web browser app

Security Guide for Developers

Normalizes nested JSON according to a schema

Bitwarden infrastructure/backend (API, database, Docker, etc).

Collection of comprehensive TypeScript libraries for Interaction with the Ethereum JSON RPC API and utility functions.

Effortlessly compose, extend, and observe every service in real-time for the first time ever.

The industry standard for API mocking in JavaScript.

Turn any website into a structured API. Extract, automate, search and monitor the web.

GPT-Image-2 API and Prompts

The Cloud-Native API Gateway and AI Gateway

Free and Open Source Machine Translation API. Self-hosted, offline capable and easy to setup.

抖音 / TikTok 平台作品下载/数据采集工具

Scalar is an open-source API platform:　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　🌐 Modern REST API Client　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　📖 Beautiful API References　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　✨ 1st-Class OpenAPI/Swagger Support

收集免费的接口服务,做一个api的搬运工

API Support for your favorite torrent trackers

A curated list of free public APIs — searchable, community-maintained, with a free JSON API.

A simple server for sending and receiving messages in real-time per WebSocket. (Includes a sleek web-ui)

Amplication brings order to the chaos of large-scale software development by creating Golden Paths for developers - streamlined workflows that drive consistency, enable high-quality code practices, simplify onboarding, and accelerate standardized delivery across teams.

Proxy server to bypass Cloudflare protection

🚀🎉📚 APITable, an API-oriented low-code platform for building collaborative apps and better than all other Airtable open-source alternatives.

Free, Open Source, Self-Hosted WhatsApp API Gateway

An API documentation generator for JavaScript.

🤖 GPU accelerated Neural networks in JavaScript for Browsers and Node.js

微信机器人 / 可能是最优雅的微信个人号 API ✨✨

HTTP Request & Response Service, written in Python + Flask.

fay是一个帮助数字人（2.5d、3d、移动、pc、网页）或大语言模型（openai兼容、deepseek）连通业务系统的agent框架。

A developer-friendly API for converting many document formats into PDF files, and more!

:octocat: A collection of APIs

小红书（XiaoHongShu、RedNote）链接提取/作品采集工具

Gorilla: Training and Evaluating LLMs for Function Calls (Tool Calls)

🔮 Graphile's Crystal Monorepo; home to Grafast, PostGraphile, pg-introspection, pg-sql2 and much more!

ShowDoc is a tool greatly applicable for an IT team to share documents online一个非常适合IT团队的在线API文档、技术文档工具

Offline documentation browser. Your personal reference library, searchable in an instant.

Connect your agents & product to 1,000 APIs.

A standard API for single-agent reinforcement learning environments, with popular reference environments and related utilities (formerly Gym)

Open-source search database for full-text, vector, and hybrid search with real-time indexing and SQL.

Open-Source AI Presentation Generator and API (Gamma, Canva, Beautiful AI, Decktopus, Presentations AI Alternative)

:rocket: Open Source REST API for SpaceX launch, rocket, core, capsule, starlink, launchpad, and landing pad data.

Open Source API and AI Gateway supporting REST, GraphQL, TCP, gRPC and MCP (Model Context Protocol)

700+ Pure CSS, SVG & Figma UI Icons, 6000+ glyphs, patterns, colors and layouts.

An opinionated framework for creating REST-like APIs in Ruby.

Swagger 2.0 implementation for go