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  1. Home
  2. Category
  3. Free APIs
🔌Category

Free APIs is a mini landing page

Use this route to compare repositories that solve the same problem lane. The first read should tell you who leads the category, which language dominates it, and whether the surface is concentrated in a few repositories or spread across several active contenders.

Leader

public-apis/public-apis

391.4K stars

Top repository in the all time category snapshot.

Dominant language

Python

8 repos

Python (8), TypeScript (6), Unknown (4)

Shape insight

38% concentration

30 repos tracked

Top-three concentration shows whether this category is flagship-heavy or broad.

Recent activity coverage

0 recently active

All Time

Snapshot updated 2025-11-04.

Compare nearby reposRead methodology
1
public-apis/public-apis
391.4K stars·Python·41.9K forks·8 months ago

A collective list of free APIs

2
neovim/neovim
95.7K stars·Vim Script·6.5K forks·6 months ago

Vim-fork focused on extensibility and usability

3
fastapi/fastapi
94.2K stars·Python·8.5K forks·6 months ago

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

4
hoppscotch/hoppscotch
77.6K stars·TypeScript·5.5K forks·6 months ago

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

5
strapi/strapi
71K stars·TypeScript·9.4K forks·6 months ago

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

6
ocornut/imgui
70.8K stars·C++·11.5K forks·6 months ago

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

7
meilisearch/meilisearch
55.4K stars·Rust·2.3K forks·6 months ago

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

8
mudler/LocalAI
42.1K stars·Go·3.4K forks·6 months ago

:robot: The free, Open Source alternative to OpenAI, Claude and others. Self-hosted and local-first. Drop-in replacement for OpenAI, running on consumer-grade hardware. No GPU required. Runs gguf, transformers, diffusers and many more. Features: Generate Text, MCP, Audio, Video, Images, Voice Cloning, Distributed, P2P and decentralized inference

9
ccxt/ccxt
40.6K stars·Python·8.5K forks·6 months ago

A cryptocurrency trading API with more than 100 exchanges in JavaScript / TypeScript / Python / C# / PHP / Go

10
trpc/trpc
39.4K stars·TypeScript·1.5K forks·6 months ago

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

11
QuivrHQ/quivr
38.8K stars·Python·3.7K forks·1 years ago

Opiniated RAG for integrating GenAI in your apps 🧠 Focus on your product rather than the RAG. Easy integration in existing products with customisation! Any LLM: GPT4, Groq, Llama. Any Vectorstore: PGVector, Faiss. Any Files. Anyway you want.

12
Kong/insomnia
37.8K stars·TypeScript·2.2K forks·6 months ago

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

13
httpie/cli
37.4K stars·Python·3.8K forks·1 years ago

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

14
chatanywhere/GPT_API_free
35.6K stars·Python·2.5K forks·6 months ago

Free ChatGPT&DeepSeek API Key,免费ChatGPT&DeepSeek API。免费接入DeepSeek API和GPT4 API,支持 gpt | deepseek | claude | gemini | grok 等排名靠前的常用大模型。

15
directus/directus
34K stars·TypeScript·4.5K forks·6 months ago

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.

16
hasura/graphql-engine
31.9K stars·TypeScript·2.9K forks·6 months ago

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

17
Binaryify/NeteaseCloudMusicApi
30.3K stars·Language not captured·15.8K forks·2 years ago

网易云音乐 Node.js API service

18
encode/django-rest-framework
29.8K stars·Python·7.1K forks·6 months ago

Web APIs for Django. 🎸

19
songquanpeng/one-api
29.1K stars·JavaScript·5.7K forks·6 months ago

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.

20
YMFE/yapi
27.8K stars·JavaScript·4.8K forks·1 years ago

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

21
littlecodersh/ItChat
26.7K stars·Python·5.7K forks·2 years ago

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。

22
PostgREST/postgrest
26.4K stars·Haskell·1.1K forks·6 months ago

REST API for any Postgres database

23
OpenAPITools/openapi-generator
25.6K stars·Java·7.3K forks·6 months ago

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

24
pppscn/SmsForwarder
24.2K stars·Kotlin·3.1K forks·7 months ago

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

25
microsoft/api-guidelines
23.2K stars·Language not captured·2.7K forks·11 months ago

Microsoft REST API Guidelines

26
shieldfy/API-Security-Checklist
23.1K stars·Language not captured·2.7K forks·1 years ago

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

27
go-chi/chi
21.4K stars·Go·1.1K forks·6 months ago

lightweight, idiomatic and composable router for building Go HTTP services

28
FallibleInc/security-guide-for-developers
21.1K stars·Language not captured·1.6K forks·11 months ago

Security Guide for Developers

29
paularmstrong/normalizr
20.9K stars·JavaScript·868 forks·4 years ago

Normalizes nested JSON according to a schema

30
pedroslopez/whatsapp-web.js
20.6K stars·JavaScript·4.8K forks·6 months ago

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

#RepositoryLanguageStars🍴 ForksUpdated
1
public-apis/public-apis

A collective list of free APIs

Python391.4K41.9K8 months ago
2
neovim/neovim

Vim-fork focused on extensibility and usability

Vim Script95.7K6.5K6 months ago
3
fastapi/fastapi

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

Python94.2K8.5K6 months ago
4
hoppscotch/hoppscotch

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

TypeScript77.6K5.5K6 months ago
5
strapi/strapi

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

TypeScript71K9.4K6 months ago
6
ocornut/imgui

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

C++70.8K11.5K6 months ago
7
meilisearch/meilisearch

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

Rust55.4K2.3K6 months ago
8
mudler/LocalAI

:robot: The free, Open Source alternative to OpenAI, Claude and others. Self-hosted and local-first. Drop-in replacement for OpenAI, running on consumer-grade hardware. No GPU required. Runs gguf, transformers, diffusers and many more. Features: Generate Text, MCP, Audio, Video, Images, Voice Cloning, Distributed, P2P and decentralized inference

Go42.1K3.4K6 months ago
9
ccxt/ccxt

A cryptocurrency trading API with more than 100 exchanges in JavaScript / TypeScript / Python / C# / PHP / Go

Python40.6K8.5K6 months ago
10
trpc/trpc

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

TypeScript39.4K1.5K6 months ago
11
QuivrHQ/quivr

Opiniated RAG for integrating GenAI in your apps 🧠 Focus on your product rather than the RAG. Easy integration in existing products with customisation! Any LLM: GPT4, Groq, Llama. Any Vectorstore: PGVector, Faiss. Any Files. Anyway you want.

Python38.8K3.7K1 years ago
12
Kong/insomnia

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

TypeScript37.8K2.2K6 months ago
13
httpie/cli

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

Python37.4K3.8K1 years ago
14
chatanywhere/GPT_API_free

Free ChatGPT&DeepSeek API Key,免费ChatGPT&DeepSeek API。免费接入DeepSeek API和GPT4 API,支持 gpt | deepseek | claude | gemini | grok 等排名靠前的常用大模型。

Python35.6K2.5K6 months ago
15
directus/directus

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.

TypeScript34K4.5K6 months ago
16
hasura/graphql-engine

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

TypeScript31.9K2.9K6 months ago
17
Binaryify/NeteaseCloudMusicApi

网易云音乐 Node.js API service

30.3K15.8K2 years ago
18
encode/django-rest-framework

Web APIs for Django. 🎸

Python29.8K7.1K6 months ago
19
songquanpeng/one-api

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.

JavaScript29.1K5.7K6 months ago
20
YMFE/yapi

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

JavaScript27.8K4.8K1 years ago
21
littlecodersh/ItChat

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。

Python26.7K5.7K2 years ago
22
PostgREST/postgrest

REST API for any Postgres database

Haskell26.4K1.1K6 months ago
23
OpenAPITools/openapi-generator

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

Java25.6K7.3K6 months ago
24
pppscn/SmsForwarder

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

Kotlin24.2K3.1K7 months ago
25
microsoft/api-guidelines

Microsoft REST API Guidelines

23.2K2.7K11 months ago
26
shieldfy/API-Security-Checklist

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

23.1K2.7K1 years ago
27
go-chi/chi

lightweight, idiomatic and composable router for building Go HTTP services

Go21.4K1.1K6 months ago
28
FallibleInc/security-guide-for-developers

Security Guide for Developers

21.1K1.6K11 months ago
29
paularmstrong/normalizr

Normalizes nested JSON according to a schema

JavaScript20.9K8684 years ago
30
pedroslopez/whatsapp-web.js

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

JavaScript20.6K4.8K6 months ago

Next step after the category scan

Open compare mode for a side-by-side read, move to the category hub, or review the guide when you need a stronger frame for what stars and activity are showing here.
Open compareBrowse all categoriesRead the guide

Learn and methodology

Keep trust-building context reachable, but behind the first data read instead of ahead of it.
GuideMethodologyArticlesWeekly Digest

How to use this category view

Category pages are most useful when you compare similar kinds of projects rather than treating the top row as an automatic recommendation list. Look at star concentration, language mix, and recent activity together to decide whether a category is dominated by a few established leaders or by a broader set of active tools.

Ranking methodology

We track repositories tagged with "api" and rank by stars. Curated API lists and directories tend to dominate this category due to their high utility for developers across all domains.

Data is sourced from the GitHub REST API and updated daily. Star counts reflect cumulative community interest over the lifetime of each repository. See Methodology & Editorial Standards for broader context.