domain: apis
2838 products, primary matches first, then adoption-weighted; health v2 shown.
| Product | Health v2 | Stars | Maturity |
|---|---|---|---|
| urschrei/pyzotero Pyzotero is a Python client library for the Zotero Web API, supporting reading and writing items in personal and group libraries. It also s… | 98 | 1402 | active |
| spatie/laravel-google-calendar A Laravel package that provides an elegant PHP API for managing events on a Google Calendar, including creating, updating, deleting, and qu… | 71 | 1402 | stable |
| ideal-postcodes/postcodes.io Postcodes.io is a free, open-source UK postcode lookup and geocoding API serving ONS Postcode Directory, Ordnance Survey Open Names, and Sc… | 93 | 1401 | active |
| danieleteti/delphimvcframework DelphiMVCFramework is a popular open-source MVC framework for building RESTful and JSON-RPC web APIs and web applications in Delphi/Object … | 76 | 1399 | stable |
| lithammer/shortuuid A Go library that generates concise, unambiguous, URL-safe UUIDs by encoding standard UUIDs to base57, removing look-alike characters. It s… | 99 | 1398 | stable |
| AttoJS/vue-request VueRequest is a Vue composable library for managing API request states, supporting SWR, polling, error retry, caching, throttling/debouncin… | 28 | 1397 | active |
| nager/Nager.Date Nager.Date is a .NET-based public holiday data project covering 200+ countries, exposed via a free public REST API, a hosted website, a Doc… | 94 | 1396 | active |
| dnaeon/go-vcr A Go library inspired by Ruby's VCR that records HTTP interactions to YAML cassettes and replays them in future test runs. It enables fast,… | 84 | 1394 | active |
| fukamachi/woo Woo is a fast, non-blocking HTTP server for Common Lisp built on top of libev, aiming to be among the fastest web servers in any language. … | 65 | 1394 | active |
| twilio/twilio-ruby The official Ruby gem for communicating with the Twilio REST API and generating TwiML for voice and messaging applications. It provides cli… | 99 | 1390 | active |
| vercel/avatar A microservice that generates beautiful gradient avatars from any username or email via simple URL parameters, returning PNG or SVG images.… | 75 | 1389 | stable |
| algolia/algoliasearch-client-javascript The official Algolia JavaScript/TypeScript API client for interacting with Algolia's hosted search service. It provides a thin, low-level H… | 95 | 1387 | stable |
| piomin/sample-spring-microservices-new A demo/sample project showcasing Spring Boot and Spring Cloud microservices patterns including service discovery, API gateway, distributed … | 75 | 1387 | active |
| stellar/go-stellar-sdk The official Go SDK for the Stellar blockchain network, maintained by the Stellar Development Foundation. It provides transaction building,… | 99 | 1383 | active |
| Luracast/Restler Restler is a zero-boilerplate REST API framework for PHP 8+ that uses reflection to auto-generate routes, validation, and OpenAPI documenta… | 98 | 1382 | active |
| eclipse-milo/milo Eclipse Milo is an open-source Java implementation of the OPC UA (IEC 62541) protocol, providing a high-performance communication stack plu… | 97 | 1382 | active |
| treefrogframework/treefrog-framework TreeFrog Framework is a high-speed, full-stack C++ MVC web application framework built on Qt, supporting HTTP and WebSocket protocols. It p… | 93 | 1381 | active |
| juspay/hyperswitch-prism Hyperswitch Prism is a stateless, unified connector library for integrating with 60+ payment processors (Stripe, Adyen, Braintree, PayPal, … | 78 | 1380 | active |
| hattipjs/hattip Hattip is a set of TypeScript packages for building HTTP server applications using web-standard Fetch API Request/Response objects. Handler… | 76 | 1380 | active |
| xfgryujk/blivedm A Python library for receiving Bilibili live-stream danmaku (bullet chat) messages over WebSocket. It supports both the web-side interface … | 76 | 1380 | active |
| brainboxdotcc/DPP D++ (DPP) is a lightweight, modern C++ library for the Discord API, supporting API v10 with efficient caching, sharding, clustering, slash … | 98 | 1379 | stable |
| JoinQuant/jqdatasdk jqdatasdk is the official Python SDK for JoinQuant's JQData service, providing easy access to Chinese financial market data including stock… | 61 | 1378 | active |
| microsoft/fhir-server FHIR Server for Azure is an open-source .NET Core implementation of the HL7 Fast Healthcare Interoperability Resources (FHIR) specification… | 95 | 1377 | active |
| devfeel/dotweb DotWeb is a simple and easy-to-use Go web micro framework providing an HTTP server with routing, middleware, caching, sessions, and TLS sup… | 86 | 1377 | active |
| hyperium/http A Rust library providing common HTTP types such as Request, Response, StatusCode, HeaderMap, and Method. It serves as the shared foundation… | 94 | 1375 | stable |
| wemake-services/django-modern-rest django-modern-rest is a modern REST API framework for Django with full typing and async support. It provides a typed, async-first alternati… | 83 | 1374 | active |
| overtrue/socialite A framework-agnostic PHP OAuth2 authentication library inspired by laravel/socialite, supporting 20+ providers including GitHub, Google, Fa… | 88 | 1373 | active |
| riba2534/feishu-cli feishu-cli is a comprehensive command-line tool for the Feishu (Lark) open platform, wrapping docs, wiki, spreadsheets, messaging, calendar… | 82 | 1371 | active |
| HashLoad/horse Horse is an Express-inspired, minimalist web framework for Delphi and Lazarus (Free Pascal) for building fast REST APIs and web services. I… | 98 | 1369 | active |
| chnirt/nestjs-graphql-best-practice A NestJS boilerplate codebase built on Express, TypeORM, Apollo GraphQL, and MongoDB that demonstrates real-world patterns such as CRUD mod… | 62 | 1369 | active |
| rest-sh/restish Restish is a Go-based command-line client for interacting with REST-ish HTTP APIs. It makes generic HTTP requests, auto-discovers OpenAPI d… | 96 | 1367 | active |
| Endava/cats CATS (Contract API Testing and Security) is a REST API fuzzer and negative testing tool for OpenAPI endpoints. It automatically generates, … | 85 | 1367 | active |
| developit/redaxios Redaxios is an 800-byte JavaScript library that provides the Axios API implemented as a thin wrapper over the native Fetch API. It lets dev… | 23 | 4881 | maintenance |
| kimsungwhee/apple-docs-mcp An MCP server that exposes Apple Developer Documentation to AI assistants like Claude and Cursor. It provides search and retrieval of iOS/m… | 43 | 1365 | active |
| python273/vk_api vk_api is a Python library that wraps the VKontakte (vk.com) API, simplifying authentication and API method calls for building scripts and … | 83 | 1364 | active |
| sneako/finch Finch is a high-performance HTTP client library for Elixir, built on Mint and NimblePool. It provides efficient connection pooling strategi… | 72 | 1363 | active |
| chriskacerguis/codeigniter-restserver A RESTful server implementation for CodeIgniter 3 provided as a single library, config file, and base controller. It lets PHP developers ex… | 71 | 4867 | maintenance |
| sourcey/sourcey Sourcey is a TypeScript-based static site generator that turns OpenAPI specs, MCP servers, Doxygen XML, godoc, rustdoc, and Markdown into a… | 97 | 1361 | active |
| aserto-dev/topaz Topaz is an open-source, cloud-native authorization service that provides fine-grained, real-time, policy-based access control for applicat… | 99 | 1360 | active |
| ebkalderon/tower-lsp tower-lsp is a Rust library implementing the Language Server Protocol (LSP) on top of the Tower service abstraction. It lets developers bui… | 23 | 1359 | stable |
| SuaveIO/suave Suave is a lightweight F# web server library with composable WebPart combinators for routing and request handling, targeting .NET 8/9. It s… | 99 | 1349 | active |
| planety/prologue Prologue is a powerful and flexible web framework written in Nim for building high-performance web services and applications. It provides r… | 76 | 1349 | active |
| roottusk/vapi vAPI is a self-hostable deliberately vulnerable API that mimics the OWASP API Security Top 10 scenarios through hands-on exercises. It ship… | 23 | 1349 | active |
| arb/celebrate celebrate is an Express middleware that wraps the Joi validation library to validate request inputs. It validates req.params, req.headers, … | 67 | 1347 | stable |
| Eric-Guo/wechat A Ruby gem providing WeChat Official Account and Mini Program API integration for Rails applications, including message sending/receiving, … | 86 | 1346 | active |
| apache/servicecomb-service-center Apache ServiceComb Service-Center is a RESTful service registry that enables microservices to register their instances and discover provide… | 73 | 1346 | active |
| xelaj/mtproto A full-native Go implementation of the Telegram MTProto protocol, providing a client library for interacting with the Telegram API without … | 23 | 1346 | active |
| Art-of-WiFi/UniFi-API-client A PHP API client class for interacting with Ubiquiti's UniFi Network Application (Controller) API over cURL. It exposes many UniFi endpoint… | 96 | 1343 | active |
| parse-community/Parse-SDK-JS The official JavaScript SDK for the Parse Platform, providing client access to Parse Server backends from JavaScript apps. It supports data… | 93 | 1342 | active |
| timostamm/protobuf-ts A pure TypeScript Protocol Buffers implementation with a protoc code-generation plugin and RPC client/server support. It generates typed me… | 76 | 1342 | active |
| ex-aws/ex_aws ExAws is a flexible, modular AWS client library for Elixir, with each AWS service (S3, DynamoDB, EC2, Lambda, SQS, etc.) provided as a sepa… | 67 | 1342 | active |
| RumenDamyanov/php-sitemap A framework-agnostic PHP package for generating sitemaps in XML, TXT, HTML, and Google News formats. It supports images, videos, translatio… | 88 | 1340 | active |
| scalapb/ScalaPB ScalaPB is a protocol buffer compiler plugin for Scala that generates Scala case classes, parsers, and serializers from .proto files. It su… | 92 | 1339 | active |
| florianv/swap Swap is a PHP library for currency conversion and exchange rate retrieval, exposing 30+ rate providers behind a single API. It includes PSR… | 86 | 1339 | stable |
| warmuuh/milkman Milkman is an extensible request/response workbench inspired by Postman, built with JavaFX instead of Electron for fast startup and low mem… | 76 | 1339 | active |
| insoxin/API A free, self-hostable REST API platform (姬长信 API) packaged as a Docker image, offering dozens of endpoints for daily-life services, news, w… | 66 | 1339 | active |
| fzlee/alipay An unofficial Python SDK for Alipay (支付宝) that supports SHA1 and SHA256 with RSA request signing and verification. It provides client and s… | 65 | 1339 | active |
| gogcom/galaxy-integrations-python-api A Python library for building community integrations that connect third-party gaming platforms to the GOG GALAXY 2.1 client. Each integrati… | 70 | 1338 | active |
| subsquid/squid-sdk Squid SDK is a TypeScript ETL toolkit for building blockchain data indexers, supporting Ethereum-like chains, Substrate, and Solana, with d… | 98 | 1337 | active |
| posva/mande Mande is an 800-byte TypeScript wrapper around the fetch API with smart defaults for communicating with JSON APIs. It provides a lightweigh… | 83 | 1336 | stable |
| stulzq/azure-openai-proxy A Go-based proxy service that converts OpenAI official API requests into Azure OpenAI API requests, letting OpenAI-ecosystem tools use Azur… | 21 | 1335 | stable |
| danielgtaylor/aglio Aglio is an API Blueprint renderer that converts Markdown-based API descriptions into themed static HTML documentation. It works as a comma… | 32 | 4748 | maintenance |
| minibear2021/wechatpayv3 A Python SDK for WeChat Pay API v3 supporting both direct-merchant and service-provider modes. It handles automatic platform certificate up… | 87 | 1332 | active |
| Flight-School/AnyCodable A Swift library providing type-erased wrappers (AnyEncodable, AnyDecodable, AnyCodable) for encoding and decoding heterogeneous values with… | 10 | 1332 | stable |
| BetterTyped/hyper-fetch Hyper Fetch is a type-safe TypeScript framework for fetching and real-time data exchange, unifying REST, GraphQL, Firebase, WebSockets, and… | 98 | 1331 | active |
| taf2/curb Curb provides Ruby-language bindings for libcurl, the fully-featured client-side URL transfer library, supporting both easy and multi modes… | 75 | 1331 | active |
| mariostoev/finviz An unofficial Python library for scraping FinViz.com, providing stock data, news, insider transactions, analyst price targets, and a stock … | 60 | 1331 | active |
| unum-cloud/UCall UCall is a high-performance JSON-RPC and REST serving library written in C with Python bindings, using io_uring and POSIX sockets to achiev… | 46 | 1331 | active |
| oasdiff/oasdiff oasdiff is a Go CLI tool and GitHub Action that diffs OpenAPI/Swagger specifications and detects breaking API changes, generating changelog… | 95 | 1330 | active |
| DeepL/deepl-python The official Python client library for the DeepL language translation API, providing a DeepLClient for translating text and documents via D… | 94 | 1330 | stable |
| qicosmos/iguana iguana is a C++17/C++20 header-only serialization engine built on compile-time reflection, supporting JSON, XML, YAML, and binary/protobuf … | 91 | 1330 | active |
| obspy/obspy ObsPy is an open-source Python framework for processing seismological data, providing file format parsers, data center web service clients,… | 79 | 1330 | active |
| guonaihong/gout gout is a Go HTTP client library designed as a 'Swiss Army Knife' for making HTTP requests with a fluent API. It supports multiple body enc… | 46 | 1329 | active |
| jasperapp/jasper Jasper is a cross-platform desktop application (built on Electron) for reading, tracking, and discovering GitHub issues and pull requests. … | 45 | 1328 | active |
| xdevplatform/xurl xurl is the official curl-like command-line tool for the X (formerly Twitter) API, written in Go. It supports OAuth 1.0a and OAuth 2.0 PKCE… | 84 | 1327 | active |
| graphql-hive/graphql-modules GraphQL Modules is a TypeScript library for building reusable, testable, and maintainable modules out of a GraphQL server's schema and reso… | 83 | 1327 | stable |
| RecipeUI/RecipeUI RecipeUI is an open-source desktop API client that lets developers discover, test, and share APIs using TypeScript-powered requests and run… | 10 | 1327 | active |
| stleary/JSON-java JSON-java (org.) is a reference implementation of a JSON package in Java, providing parsers, encoders, and decoders for JSON documents. It … | 90 | 4717 | maintenance |
| amphp/http-server amphp/http-server is a non-blocking, concurrent HTTP/1.1 and HTTP/2 application server library for PHP built on the Revolt event loop and A… | 92 | 1325 | stable |
| koajs/bodyparser @koa/bodyparser is the official body-parsing middleware for the Koa web framework, built on co-body. It parses incoming JSON, form, text, a… | 75 | 1325 | stable |
| wojtekmach/req Req is a batteries-included HTTP client library for Elixir with automatic JSON decoding, redirects, retries, and authentication built in. I… | 95 | 1324 | active |
| MagicStack/httptools httptools is a Python binding for Node.js's fast HTTP parsers (llhttp and http-parser), providing request/response parser classes and a URL… | 88 | 1324 | stable |
| php-http/discovery A PHP library that auto-discovers installed PSR-17, PSR-18, and HTTPlug HTTP client and message factory implementations, with a Composer pl… | 48 | 1324 | stable |
| alloy-rs/alloy Alloy is a high-performance Rust library for connecting applications to Ethereum and EVM-based blockchains, providing transports, providers… | 92 | 1321 | active |
| yukkcat/gemini-business2api A self-hosted gateway service that exposes Gemini Business through an OpenAI-compatible API, with multi-account load balancing and an admin… | 58 | 1321 | active |
| Khan/genqlient genqlient is a Go library and code generator that produces type-safe client code for GraphQL APIs. It validates queries against the schema … | 70 | 1320 | active |
| DSharpPlus/DSharpPlus DSharpPlus is an unofficial .NET wrapper library for the Discord API, used to build Discord bots in C#. It is the continuation of DiscordSh… | 88 | 1319 | active |
| solidjs/solid-router Solid Router is the official routing library for SolidJS, inspired by Ember and React Router. It provides declarative, reactive client-side… | 86 | 1317 | active |
| php-http/message A PHP library providing PSR-7 HTTP message related tools, including authentication implementations, stream encoding, message decorators, an… | 48 | 1317 | stable |
| proyecto26/RestClient A Promise-based REST and HTTP client library for Unity built on top of UnityWebRequest. It lets game developers make async HTTP requests wi… | 79 | 1315 | stable |
| amatsuda/jb Jb is a JSON API template engine for Ruby on Rails that serves as a simpler and faster alternative to Jbuilder. Templates are plain Ruby co… | 61 | 1315 | stable |
| wild-card-ai/agents-json agents.json is an open specification built on OpenAPI that formally describes contracts for API and agent interactions, translating OpenAPI… | 39 | 1315 | active |
| wiz0u/WTelegramClient WTelegramClient is a Telegram Client API (MTProto) library written entirely in C# and .NET, allowing programs to connect to Telegram and co… | 76 | 1314 | active |
| VirtoCommerce/vc-platform Virto Commerce is an open-source, headless ecommerce platform for building extensible B2B, B2C, and B2B2C digital commerce solutions, marke… | 95 | 1311 | stable |
| procore-oss/blueprinter Blueprinter is a declarative JSON serialization library for Ruby that turns business objects into simple hashes and renders them as JSON. I… | 76 | 1311 | active |
| erev0s/VAmPI VAmPI is a deliberately vulnerable REST API built with Flask that implements the OWASP Top 10 vulnerabilities for APIs. It is designed for … | 66 | 1311 | active |
| zaghaghi/openapi-tui A terminal UI application for listing, browsing, and executing APIs defined with OpenAPI v3.0 and v3.1 specifications. Built in Rust with r… | 60 | 1311 | active |
| cased/kit kit is a Python toolkit for code intelligence and context engineering, providing codebase mapping, tree-sitter-based symbol extraction, gre… | 57 | 1311 | active |
| leafsphp/leaf Leaf is a lightweight, modular PHP framework focused on developer experience, rapid development, and high performance for web apps and APIs… | 98 | 1310 | active |
| FutunnOpen/py-futu-api The official Python SDK for the Futu OpenAPI, providing market data and trading interfaces for Hong Kong, US, and China A-share markets via… | 66 | 1310 | active |