Topics / #api

API projects on GitHub

Designing, building, and consuming application programming interfaces between services.

As of , the most-starred API projects on GitHub are public-apis (489.6K stars), tensorflow (201.1K stars) and claw-code (194.9K stars). GitHub.Locker tracks 1,094 API repositories with 20.8M stars combined. The fastest-growing on October 16 was dsh-our-free-model, with +1.7K stars in a day.

1,094Projects
20.8MStars in total
+21.7KStars in a day

Hot right now

Most stars gained in a day · Oct 16

The all-time top

Top 100 of 1,094 · by stars

  1. #1 · public-apis/public-apis

    public-apis

    A collective list of free APIs: a huge, manually curated catalog of public APIs for developers, maintained by the community for years. You do not call it — you browse the catalog and pick third-party APIs to use in your own product.

    489.6K
  2. #2 · tensorflow/tensorflow

    tensorflow

    TensorFlow is an open source machine learning platform for building and deploying ML-powered applications.

    201.1K
  3. #3 · ultraworkers/claw-code

    claw-code

    Claw Code is the public Rust implementation of 'claw', a CLI coding-agent harness. By its own README it is less a production tool and more an 'agent-managed museum exhibit' maintained entirely by AI agents/harnesses with no human intervention, in the spirit of (but unaffiliated with) Claude Code.

    194.9K
  1. 4

    firecrawl

    192.2Kfirecrawl/firecrawl · TypeScript

    Firecrawl turns any website into clean, LLM-ready data by crawling, scraping, and searching the web, delivering markdown, structured JSON, or screenshots that AI agents can consume directly.

  2. 5

    markitdown

    190.7Kmicrosoft/markitdown · Python

    MarkItDown is a lightweight Python utility that converts files like PDF, PowerPoint, Word, Excel, images, audio, HTML, CSV/JSON/XML, ZIP archives, EPubs and even YouTube URLs into Markdown, designed for feeding documents into LLMs and text analysis pipelines.

  3. 6

    awesome-go

    188.8Kavelino/awesome-go · Go

    A curated list of awesome Go frameworks, libraries, and software, organized by category.

  4. 7

    ollama

    183.5Kollama/ollama · Go

    Ollama is a tool for downloading and running open large language models like DeepSeek, Qwen, Gemma, Llama, Mistral and gpt-oss on your own machine, with a simple CLI and a local REST API.

  5. 8

    langflow

    155.8Klangflow-ai/langflow · Python

    Langflow is a platform for building and deploying AI-powered agents and workflows with a visual, drag-and-drop interface.

  6. 9

    iptv

    141.1Kiptv-org/iptv · TypeScript

    A collection of publicly available IPTV channel playlists (M3U) gathered from all over the world.

  7. 10

    ComfyUI

    137.9KComfy-Org/ComfyUI · Python

    ComfyUI is a node-based graph interface for building and running diffusion model workflows: image, video, 3D, and audio generation, editing, and more, all without writing code.

  8. 11

    MoneyPrinterTurbo

    132.2Kharry0703/MoneyPrinterTurbo · Python

    MoneyPrinterTurbo is an all-in-one AI tool that turns a topic or keyword into a finished short video: it writes the script, finds matching footage, generates subtitles and background music, and renders the final HD clip automatically.

  9. 12

    llama.cpp

    131.4Kggml-org/llama.cpp · C++

    llama.cpp is a plain C/C++ implementation for running LLM (and VLM) inference with minimal setup and state-of-the-art performance, either locally or in the cloud.

  10. 13

    pi

    115.7Kearendil-works/pi · TypeScript

    Pi is an agent harness: a toolkit of packages for building and running AI agents, including a self-extensible interactive coding agent CLI, a unified multi-provider LLM API, an agent runtime, and a terminal UI library.

  11. 14

    axios

    109.3Kaxios/axios · JavaScript

    axios is a promise-based HTTP client for JavaScript: you use it to send requests to APIs and servers and then work with the responses as promises.

  12. 15

    DeepSeek-V3

    104.5Kdeepseek-ai/DeepSeek-V3 · Python

    DeepSeek-V3 is an open-weight Mixture-of-Experts (MoE) language model with 671B total parameters but only 37B activated per token, built for efficient yet high-performing inference and matching leading closed-source models on many benchmarks.

  13. 16

    fastapi

    103.1Kfastapi/fastapi · Python

    FastAPI is a modern Python web framework for building APIs using standard Python type hints, with automatic data validation and interactive documentation.

  14. 17

    neovim

    103Kneovim/neovim · Vim Script

    Neovim is a fork of Vim, a modal text editor, rebuilt to be more extensible, maintainable, and friendly to multiple contributors and advanced UIs.

  15. 18

    puppeteer

    95.7Kpuppeteer/puppeteer · TypeScript

    Puppeteer is a JavaScript library that gives you a high-level API to control Chrome or Firefox programmatically, either over the DevTools Protocol or WebDriver BiDi.

  16. 19

    OpenCut

    95KOpenCut-app/OpenCut · TypeScript

    OpenCut is a free, open-source video editor meant to be a CapCut alternative, built to work across web, desktop, and mobile.

  17. 20

    ragflow

    92.4Kinfiniflow/ragflow · Go

    RAGFlow is an open-source Retrieval-Augmented Generation (RAG) engine that combines RAG with Agent capabilities to build a context layer for LLMs, turning complex enterprise data into production-ready AI systems.

  18. 21

    servers

    91.3Kmodelcontextprotocol/servers · JavaScript

    This is a collection of reference server implementations for the Model Context Protocol (MCP), showing how to give LLMs secure, controlled access to tools and data sources.

  19. 22

    system-design-101

    90.5KByteByteGoHq/system-design-101

    A free, visual collection of short explainers and cheat sheets covering core system design concepts (APIs, databases, caching, message queues, real-world company architectures) to help you understand how production systems work and prepare for system design interviews.

  20. 23

    gin

    89.4Kgin-gonic/gin · Go

    Gin is a high-performance HTTP web framework written in Go, used for building REST APIs, web applications, and microservices.

  21. 24

    NextChat

    88.8KChatGPTNextWeb/NextChat · TypeScript

    NextChat is a fast, lightweight AI chat assistant that lets you talk to GPT-4o, Claude, Gemini, DeepSeek and 100+ other models through one unified interface, deployable with a single click or self-hosted.

  22. 25

    crawl4ai

    85.7Kunclecode/crawl4ai · Python

    Crawl4AI is an open-source web crawler and scraper that turns any website into clean, LLM-ready Markdown for RAG pipelines, AI agents, and data extraction workflows.

  23. 26

    realworld

    84.3Krealworld-apps/realworld · TypeScript

    RealWorld is a project that builds the exact same Medium.com-style blogging app over and over using different frontend and backend frameworks (React, Angular, Node, Django and 100+ more), so developers can compare how real frameworks handle a realistic app instead of a trivial todo demo.

  24. 27

    MinerU

    81.9Kopendatalab/MinerU · Python

    MinerU is a high-accuracy document parsing engine that converts PDF, DOCX, PPTX, XLSX, images and web pages into structured Markdown or JSON, built for LLM, RAG and agent workflows.

  25. 28

    spring-boot

    81.7Kspring-projects/spring-boot · Java

    Spring Boot is a Java framework that helps you create production-grade, Spring-powered applications and services with minimal configuration fuss.

  26. 29

    hoppscotch

    80.6Khoppscotch/hoppscotch · TypeScript

    Hoppscotch is an open-source API development ecosystem for building, testing and debugging REST, GraphQL, WebSocket, MQTT, Server-Sent Events and Socket.IO APIs, positioned as an open alternative to Postman or Insomnia.

  27. 30

    github-readme-stats

    79.8Kanuraghazra/github-readme-stats · JavaScript

    A service that generates dynamic SVG stat cards (commits, stars, PRs, rank) and a top-languages card you can embed in your GitHub profile README.

  28. 31

    elasticsearch

    78.3Kelastic/elasticsearch · Java

    Elasticsearch is a distributed search and analytics engine, scalable data store, and vector database built for near real-time full-text search, vector search, and generative AI (RAG) use cases on production-scale data; it's the core of Elastic's Stack platform.

  29. 32

    unsloth

    78.2Kunslothai/unsloth · Python

    Unsloth is a local-first app for running and training LLMs, diffusion, TTS and embedding models on your own machine, including models like Qwen3.8, DeepSeek-V4, MiniMax-H3, Gemma 4 and FLUX.

  30. 33

    OmniRoute

    77.4Kdiegosouzapw/OmniRoute · TypeScript

    OmniRoute is a free, open-source AI gateway that puts 359 providers and 1200+ models (Kimi, Claude, GPT, Gemini, GLM, DeepSeek, MiniMax, etc.) behind one API endpoint, with quota-aware automatic fallback when a provider runs out.

  31. 34

    awesome-claude-skills

    77.3KComposioHQ/awesome-claude-skills · Python

    A comprehensive and curated list of 1000+ production-ready Claude Skills and Plugins for enhancing productivity across Claude.ai, Claude Code, and other coding agents like Codex, Cursor, Gemini CLI, and Antigravity.

  32. 35

    nest

    76.9Knestjs/nest · TypeScript

    Nest is a progressive Node.js framework for building efficient, scalable, enterprise-grade server-side applications using TypeScript (while staying compatible with plain JavaScript).

  33. 36

    imgui

    76.7Kocornut/imgui · C++

    Dear ImGui is a bloat-free graphical user interface library for C++ that outputs optimized vertex buffers you render in your own 3D-pipeline-enabled application. It is aimed at tooling, debug UIs, and visualization rather than end-user application UIs.

  34. 37

    openai-cookbook

    76.7Kopenai/openai-cookbook · Jupyter Notebook

    A collection of example code and guides for accomplishing common tasks with the OpenAI API, covering things like prompting, embeddings, function calling, and retrieval.

  35. 38

    30-Days-Of-Python

    76.4KAsabeneh/30-Days-Of-Python · Python

    A free 30-day structured curriculum for learning Python from scratch, covering everything from basic syntax to building web APIs and working with databases.

  36. 39

    json-server

    75.7Ktypicode/json-server · JavaScript

    json-server lets you spin up a fully working fake REST API in under 30 seconds, with no backend code to write — just a single JSON file defining your data.

  37. 40

    superset

    75.2Kapache/superset · Python

    Apache Superset is a modern, enterprise-ready business intelligence web application for data exploration and visualization: build dashboards, charts, and query data with a built-in SQL editor.

  38. 41

    flask

    74.9Kpallets/flask · Python

    Flask is a lightweight WSGI web application framework for Python — designed to make getting started quick and easy, with the ability to scale up to complex applications.

  39. 42

    OpenBB

    74.3Kopenbq-org/OpenBB · Python

    Open Data Platform (ODP) by OpenBB is an open-source toolset that lets you integrate proprietary, licensed, and public financial data sources once and then consume them everywhere: in Python, Excel, OpenBB Workspace, AI agents via MCP, or REST APIs.

  40. 43

    strapi

    73.3Kstrapi/strapi · TypeScript

    Strapi is the leading open-source headless CMS: 100% JavaScript/TypeScript, it lets developers build content APIs fast while giving content creators a friendly editing interface.

  41. 44

    reveal.js

    72.4Khakimel/reveal.js · JavaScript

    reveal.js is an open source HTML presentation framework that lets anyone with a web browser build slide decks instead of using PowerPoint or Keynote.

  42. 45

    moby

    72.2Kmoby/moby · Go

    Moby is Docker's open-source upstream project: a 'Lego set' of toolkit components (build tools, registry, orchestration, runtime) plus a framework for assembling them into custom container-based systems.

  43. 46

    protobuf

    72.1Kprotocolbuffers/protobuf · C++

    Protocol Buffers (protobuf) is Google's language-neutral, platform-neutral, extensible mechanism for serializing structured data, similar to XML but smaller, faster, and simpler.

  44. 47

    daytona

    71.5Kdaytonaio/daytona

    Daytona is a secure, elastic infrastructure runtime for running AI-generated code inside isolated sandboxes, used by agents and developers through SDKs, an API, and a CLI.

  45. 48

    express

    69.6Kexpressjs/express · JavaScript

    Express is a fast, unopinionated, minimalist web framework for Node.js, used for building HTTP servers, APIs, and web apps.

  46. 49

    strix

    69.1Kusestrix/strix · Python

    Strix is an open-source tool that uses autonomous AI agents to pentest your application like real hackers: it runs your code dynamically, finds vulnerabilities, and proves them with working exploits instead of just flagging suspicious patterns.

  47. 50

    docling

    69Kdocling-project/docling · Python

    Docling parses diverse document formats such as PDF, DOCX, PPTX, XLSX, HTML and more, turning them into a unified representation ready for generative AI pipelines.

  48. 51

    mem0

    67.3Kmem0ai/mem0 · Python

    Mem0 is a memory layer for AI agents and apps: it stores user preferences and conversation history so your AI assistant remembers people across sessions instead of starting from zero every time.

  49. 52

    gpt4free

    66.9Kxtekky/gpt4free · Python

    GPT4Free (g4f) is a community-driven project that aggregates many free and reverse-engineered access points to commercial LLMs (GPT-4, Claude, Gemini, DeepSeek, etc.) and media-generation models, exposing them through one unified Python/JS client, web GUI, and OpenAI-compatible API.

  50. 53

    daily_stock_analysis

    66.5KZhuLinsen/daily_stock_analysis · Python

    An AI-driven stock analysis system that pulls market data and news for A-share, Hong Kong, US, Japanese, Korean and Taiwanese stocks, then generates a daily AI decision report and pushes it to WeChat Work, Feishu, Telegram, Discord, Slack or email.

  51. 54

    nocodb

    65.3Knocodb/nocodb · TypeScript

    NocoDB is a free, self-hostable Airtable alternative: an online database builder that gives your data a rich, no-code spreadsheet interface.

  52. 55

    traefik

    65.3Ktraefik/traefik · Go

    Traefik is a modern HTTP reverse proxy and load balancer built to make deploying and exposing microservices easy, with automatic configuration based on your infrastructure.

  53. 56

    socket.io

    63.2Ksocketio/socket.io · TypeScript

    Socket.IO is a library that enables bidirectional, low-latency, real-time communication between a Node.js server and clients such as browsers or mobile apps.

  54. 57

    context7

    63.2Kupstash/context7 · TypeScript

    Context7 fetches up-to-date, version-specific documentation and code examples for the libraries you use and injects them directly into your AI coding agent's prompt, instead of relying on the model's stale training data.

  55. 58

    TrendRadar

    63Ksansan0/TrendRadar · Python

    TrendRadar is an AI-driven public opinion and trend monitoring tool that aggregates trending topics from many Chinese platforms plus RSS feeds, filters them with keywords or AI, and pushes a smart briefing to your phone or desktop.

  56. 59

    ultralytics

    62.6Kultralytics/ultralytics · Python

    Ultralytics YOLO is a family of state-of-the-art computer vision models (YOLO26, YOLO11, YOLOv8, etc.) covering object detection, instance segmentation, semantic segmentation, image classification, pose estimation, oriented object detection, depth estimation, and multi-object tracking in video.

  57. 60

    pi-hole

    61.3Kpi-hole/pi-hole · Shell

    Pi-hole is a DNS sinkhole that blocks ads and trackers for every device on your network, without needing any software installed on the devices themselves.

  58. 61

    penpot

    61.2Kpenpot/penpot · Clojure

    Penpot is an open-source design platform for product teams, letting them design UI, prototype, and build design systems with full self-hosting control instead of relying on a proprietary SaaS tool.

  59. 62

    atom

    60.7Katom/atom · JavaScript

    Atom is a hackable text editor for the 21st century, built on Electron.

  60. 63

    spring-framework

    60.3Kspring-projects/spring-framework · Java

    Spring Framework is the foundational library for the entire Spring ecosystem, providing core infrastructure (dependency injection, AOP, data access, MVC, etc.) for building enterprise Java applications.

  61. 64

    meilisearch

    59.6Kmeilisearch/meilisearch · Rust

    Meilisearch is a fast, open-source search engine that adds AI-powered hybrid search (combining full-text and semantic search) to websites and apps.

  62. 65

    rails

    58.8Krails/rails · Ruby

    Rails is a web application framework that includes everything needed to create database-backed web applications following the Model-View-Controller (MVC) pattern.

  63. 66

    twenty

    58.4Ktwentyhq/twenty · TypeScript

    Twenty is an open-source CRM built as an alternative to Salesforce, aimed at technical teams who want to customize objects, fields, views, workflows and agents instead of being locked into a closed platform.

  64. 67

    jellyfin

    58.1Kjellyfin/jellyfin · C#

    Jellyfin is a free, open-source media server backend that lets you organize and stream your own movies, shows, and music to apps on other devices, similar to Plex or Emby but with no premium tiers.

  65. 68

    private-gpt

    57.6Kzylon-ai/private-gpt · Python

    PrivateGPT is an open-source API layer that turns any local, OpenAI-compatible model into a full production-ready AI application backend, covering RAG, tools, MCP, text-to-sql and more.

  66. 69

    n8n-workflows

    57KZie619/n8n-workflows · Python

    A collection of every n8n automation workflow the author could find - 4,343 production-ready workflows across 365 integrations - with a searchable web interface for finding and downloading the JSONs.

  67. 70

    Ghost

    55.6KTryGhost/Ghost · TypeScript

    Ghost is an open-source publishing platform for running blogs, newsletters, memberships and paid subscriptions.

  68. 71

    Flowise

    55.5KFlowiseAI/Flowise · TypeScript

    Flowise is a drag-and-drop visual builder for creating AI agents, chatbots, and LLM workflows (chains, RAG pipelines, multi-agent systems) without hand-coding every integration.

  69. 72

    freqtrade

    55.5Kfreqtrade/freqtrade · Python

    Freqtrade is a free, open-source crypto trading bot written in Python that automates buying and selling across major exchanges, controllable via Telegram or a built-in web UI.

  70. 73

    goose

    55.3Kaaif-goose/goose · Rust

    Goose is an open-source, general-purpose AI agent that runs on your machine to help with code, research, writing, automation, and data analysis — not just code suggestions, but actually installing, executing, editing, and testing things for you.

  71. 74

    requests

    54.5Kpsf/requests · Python

    It is a simple, yet elegant, HTTP library for Python that lets you send HTTP/1.1 requests extremely easily.

  72. 75

    claude-cookbooks

    53.5Kanthropics/claude-cookbooks · Jupyter Notebook

    Anthropic's collection of notebooks and recipes showing fun and effective ways of using Claude, with copy-able code snippets you can drop straight into your own projects.

  73. 76

    multica

    53Kmultica-ai/multica · Go

    Multica is a self-hostable workspace where you assign issues to AI coding agents (Claude Code, Codex, Cursor, and others) the way you'd assign work to a teammate — they pick up the task, report progress, and hand it back for review.

  74. 77

    go-ethereum

    51.4Kethereum/go-ethereum · Go

    Go-ethereum (geth) is the Go implementation of the Ethereum protocol — the main CLI client used to run a full Ethereum node, sync the blockchain, and expose JSON-RPC APIs to interact with the network.

  75. 78

    hindsight

    50.7Kvectorize-io/hindsight · Python

    Hindsight is an agent memory system that helps AI agents learn over time instead of just recalling raw conversation history, aiming to outperform RAG and knowledge-graph approaches on long-term memory tasks.

  76. 79

    mastodon

    50.4Kmastodon/mastodon · Ruby

    Mastodon is a free, open-source social network server based on ActivityPub, where users can follow friends, discover new ones, and publish text, links, pictures, and video.

  77. 80

    huginn

    50.1Khuginn/huginn · Ruby

    Huginn lets you build 'agents' that watch the web for events and act on your behalf — a self-hosted, hackable alternative to IFTTT or Zapier.

  78. 81

    LocalAI

    49.6Kmudler/LocalAI · Go

    LocalAI is an open-source, self-hosted AI engine that lets you run LLMs, vision, voice, image and video models on your own hardware, including CPU-only setups, through an OpenAI/Anthropic/ElevenLabs-compatible API.

  79. 82

    RxJava

    48.2KReactiveX/RxJava · Java

    RxJava is a Java library (Reactive Extensions for the JVM) for composing asynchronous and event-based programs using observable sequences.

  80. 83

    exo

    47.9Kexo-explore/exo · Python

    exo turns a group of your own devices (Macs, Linux boxes) into a single AI cluster so you can run large AI models that would never fit on one machine, pooling their memory and compute together.

  81. 84

    textgen

    47.7Koobabooga/textgen · Python

    TextGen is an open-source desktop app for running local LLMs with text, vision, tool-calling, and an OpenAI/Anthropic-compatible API, built to be 100% private with no telemetry.

  82. 85

    serverless

    46.9Kserverless/serverless · JavaScript

    The Serverless Framework is a tool that lets you build and deploy applications on AWS Lambda and other managed cloud services, so they auto-scale, cost nothing when idle, and need minimal upkeep.

  83. 86

    cli

    46.7Kcli/cli · Go

    GitHub CLI (gh) is GitHub's official command line tool that brings pull requests, issues, and other GitHub concepts to your terminal, right next to git and your code.

  84. 87

    system-design

    46.6Kkaranpratapsingh/system-design

    It is a free course and ebook that teaches how to design large-scale systems and prepares readers for system design interviews.

  85. 88

    RSSHub

    46.5KDIYgod/RSSHub · TypeScript

    RSSHub is an open-source RSS feed generator that turns content from thousands of sites and apps (Bilibili, Twitter/X, Instagram, YouTube, Telegram, Spotify, and more) into RSS feeds you can subscribe to in any reader.

  86. 89

    TTS

    46.1Kcoqui-ai/TTS · Python

    Coqui TTS is a deep learning toolkit for Text-to-Speech, shipping 1100+ pretrained models plus tools for training, fine-tuning, and curating datasets for new voices.

  87. 90

    vnpy

    45.9Kvnpy/vnpy · Python

    VeighNa (vnpy) is an open-source Python framework for building quantitative trading systems, used by hedge funds, brokerages, and futures companies in China.

  88. 91

    Leaflet

    45.8KLeaflet/Leaflet · JavaScript

    Leaflet is a leading open-source JavaScript library for building interactive, mobile-friendly maps for the web.

  89. 92

    grpc

    45.4Kgrpc/grpc · C++

    gRPC is a modern, high-performance open-source RPC (remote procedure call) framework that lets client and server applications communicate transparently across languages and platforms.

  90. 93

    hyperswitch

    45.3Kjuspay/hyperswitch · Rust

    Hyperswitch is an open-source, composable payments platform that lets businesses route, retry, vault, and reconcile payments across 120+ payment processors like Stripe, Adyen, Braintree, and Worldpay, either self-hosted or as a SaaS.

  91. 94

    cobalt

    45Kimputnet/cobalt · Svelte

    cobalt is a media downloader with no ads, trackers, or paywalls: you paste a link to a video or song, get the file, and move on.

  92. 95

    jan

    45Kjanhq/jan · Rust

    Jan is an open-source, self-hosted alternative to ChatGPT that runs 100% offline on your own computer, letting you download and run LLMs locally with full control and privacy.

  93. 96

    lossless-cut

    44.6Kmifi/lossless-cut · TypeScript

    LosslessCut is a cross-platform FFmpeg GUI for extremely fast, lossless cutting, trimming, merging and remuxing of video and audio files without re-encoding.

  94. 97

    ccxt

    44.4Kccxt/ccxt · Python

    CCXT is a unified trading library that connects to 100+ cryptocurrency exchanges and prediction markets through a single API, available in JavaScript/TypeScript, Python, C#, PHP, Go, Java and Rust.

  95. 98

    GPT_API_free

    44.3Kchatanywhere/GPT_API_free

    GPT_API_free is a free relay/proxy API service that lets you call GPT, DeepSeek, Claude, Gemini, Grok, Qwen, Kimi and MiniMax models through one OpenAI-compatible interface, with a paid tier that is much cheaper than official pricing.

  96. 99

    Fabric

    44.3Kdanielmiessler/Fabric · Go

    Fabric is an open-source framework that organizes AI prompts (called Patterns) by real-world task, so you can apply AI to specific problems from the command line or via a REST API.

  97. 100

    zod

    44.1Kcolinhacks/zod · TypeScript

    Zod is a schema validation library: you describe what your data should look like, and it checks real values against that description at runtime.

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