domain: apis
2838 products, primary matches first, then adoption-weighted; health v2 shown.
| Product | Health v2 | Stars | Maturity |
|---|---|---|---|
| thomaspoignant/go-feature-flag GO Feature Flag is an open-source, OpenFeature-native feature flag management system that runs self-hosted on your own infrastructure with … | 95 | 2089 | active |
| Keats/jsonwebtoken A Rust library for creating and decoding JSON Web Tokens (JWTs) in a strongly typed way, supporting HS256/384/512, RS256/384/512, PS256/384… | 75 | 2089 | active |
| formio/formio.js A plain JavaScript library that renders JSON schema-based web forms and includes a full drag-and-drop JSON form builder. It also serves as … | 76 | 2087 | active |
| realworld-apps/aspnetcore-realworld-example-app An ASP.NET Core backend implementation of the RealWorld (Medium.com clone) spec, demonstrating CRUD, JWT authentication, pagination, and ve… | 76 | 2087 | active |
| savonrb/savon Savon is a SOAP client library for Ruby that reads WSDL documents, maps service operations to Ruby methods, and converts between Ruby hashe… | 96 | 2085 | active |
| ledgetech/lua-resty-http A Lua HTTP client cosocket driver for OpenResty / ngx_lua, supporting HTTP 1.0/1.1, SSL, streaming response bodies, keepalives, and request… | 85 | 2078 | stable |
| jarcoal/httpmock httpmock is a Go library for easily mocking HTTP responses from external resources in tests. It lets you register responders for exact URLs… | 86 | 2077 | stable |
| elixir-tesla/tesla Tesla is a flexible HTTP client library for Elixir built around a composable middleware stack and pluggable adapters such as Mint, Finch, a… | 99 | 2076 | stable |
| twilio/twilio-python The official Twilio Python SDK for communicating with the Twilio API and generating TwiML. It lets Python applications send SMS, make calls… | 98 | 2076 | stable |
| cloudflare/cloudflare-go The official Go SDK for the Cloudflare REST API, generated with Stainless and covering Cloudflare products such as zones, DNS, and Zero Tru… | 98 | 2075 | active |
| schibsted/WAAS Whisper as a Service (WAAS) is a self-hosted GUI and API wrapper around OpenAI's Whisper speech-to-text model, with asynchronous job queuin… | 73 | 2075 | active |
| superglue-ai/superglue superglue is an open-source, self-hostable agentic integration platform that builds production-grade API integrations, data migrations, and… | 65 | 2053 | active |
| typpo/quickchart QuickChart is an open-source web service that renders chart images and QR codes from URLs or POST requests, using Chart.js configurations. … | 23 | 2053 | active |
| laurentS/slowapi SlowAPI is a rate limiting library for Starlette and FastAPI, adapted from flask-limiter and built on top of the limits package. It support… | 84 | 2052 | stable |
| upbit/pixivpy PixivPy is a Python client library for the Pixiv App-API, supporting authenticated access via refresh tokens. It provides methods for searc… | 38 | 2052 | active |
| rest-nvim/rest.nvim rest.nvim is an asynchronous HTTP client plugin for Neovim written in Lua, letting users run HTTP requests defined in .http files directly … | 61 | 2051 | active |
| Kong/insomnia-mockbin Insomnia Mockbin is the backend service powering the API mocking capability of Kong's Insomnia platform. It lets developers create custom m… | 67 | 2048 | active |
| kwhitley/itty-router Itty Router is an ultra-tiny (~450B-1kB) TypeScript HTTP router library designed for serverless and edge environments like Cloudflare Worke… | 89 | 2046 | active |
| upstash/ratelimit-js A TypeScript rate limiting library backed by Upstash Redis that works over HTTP, making it suitable for serverless and edge runtimes. It pr… | 83 | 2044 | stable |
| platformatic/platformatic Platformatic Watt is an open-source Node.js application server that runs any Node.js application (in any framework) inside worker threads, … | 95 | 2034 | active |
| reactive/data-client Reactive Data Client is a TypeScript async state management library for React, React Native, Vue, and Next.js that provides declarative, sc… | 89 | 2034 | active |
| mgonto/restangular Restangular is an AngularJS service that simplifies consuming RESTful APIs by handling GET, POST, PUT, and DELETE requests against Restful … | 23 | 7790 | maintenance |
| symfony/http-client Symfony HttpClient is a PHP component providing a low-level HTTP client with support for both PHP stream wrappers and cURL. It fetches HTTP… | 95 | 2030 | stable |
| devinus/poison Poison is a fast, pure-Elixir JSON encoding and decoding library that fully conforms to RFC 8259 and ECMA 404. It provides a hand-rolled si… | 32 | 2030 | stable |
| kartikk221/hyper-express HyperExpress is a high-performance Node.js HTTP and WebSocket server library built on top of uWebSockets.js, exposing a simple Express-like… | 96 | 2029 | active |
| expressjs/cookie-parser Express/Node.js middleware that parses the HTTP Cookie header and populates req.cookies with name-value pairs. It also supports signed cook… | 61 | 2028 | stable |
| microcks/microcks Microcks is an open source, cloud native platform for API mocking and testing that turns OpenAPI, AsyncAPI, gRPC, GraphQL, Postman and Soap… | 98 | 2026 | active |
| openid/AppAuth-iOS AppAuth-iOS is an Objective-C client SDK for iOS, macOS, and tvOS that implements OAuth 2.0 and OpenID Connect authorization flows. It foll… | 91 | 2024 | stable |
| Azure Functions Azure Functions is Microsoft's serverless, event-driven compute platform, and this repo contains the open-source runtime host that executes… | 95 | 2020 | active |
| Urigo/graphql-cli A command-line tool for common GraphQL development workflows, built on graphql-config with a plugin-based command system. It helps initiali… | 67 | 2019 | active |
| john-kurkowski/tldextract A Python library that accurately splits URLs into subdomain, domain, and public suffix components using the Public Suffix List. It also shi… | 86 | 2014 | stable |
| mvantellingen/python-zeep Zeep is a Python SOAP client built on lxml, requests, and httpx. It parses WSDL documents and supports SOAP 1.1/1.2, WS-Addressing, WSSE se… | 80 | 2007 | stable |
| SGrondin/bottleneck Bottleneck is a lightweight, zero-dependency task scheduler and rate limiter for Node.js and the browser. It supports distributed rate limi… | 23 | 2003 | stable |
| gin-contrib/cors The official CORS (Cross-Origin Resource Sharing) middleware for the Gin web framework in Go. It provides configurable handling of allowed … | 87 | 1999 | stable |
| 64bit/async-openai async-openai is a Rust library providing typed, async clients for the OpenAI API, covering chat completions, responses, embeddings, assista… | 93 | 1998 | active |
| unrolled/render A Go package that simplifies rendering HTTP responses as JSON, XML, JSONP, plain text, binary data, or HTML templates. It wraps Go's standa… | 73 | 1998 | stable |
| imcvampire/vue-axios A small wrapper library that integrates the axios HTTP client into Vue.js applications, binding axios to the Vue instance so it can be acce… | 23 | 1998 | stable |
| thx/rap2-delos RAP2-Delos is the backend API server of RAP2, an open-source interface management tool by Alibaba's THX team, built with Koa, MySQL, and Re… | 42 | 7625 | maintenance |
| rdegges/ipify-api The Go source code powering ipify, a free public API service that returns a client's public IP address, serving billions of requests per mo… | 32 | 1990 | stable |
| nntaoli-project/goex A Go SDK that wraps the REST APIs of cryptocurrency exchanges like OKX and Binance behind a unified interface. It supports public market da… | 63 | 1989 | active |
| EsperoTech/yaade Yaade is an open-source, self-hosted, collaborative API development environment designed as a Postman alternative. It supports REST and Web… | 51 | 1986 | active |
| openapi-generators/openapi-python-client A Python CLI tool that generates modern, type-annotated Python client libraries from OpenAPI 3.0 and 3.1 documents. It uses Jinja2 template… | 95 | 1985 | active |
| notifme/notifme-sdk Notifme SDK is a Node.js library for sending transactional notifications across multiple channels including email, SMS, push, webpush, and … | 76 | 1985 | active |
| Kitura/Kitura Kitura is a Swift web framework and HTTP server for building web services and REST APIs. It provides URL routing, Codable routing, pluggabl… | 60 | 7578 | maintenance |
| james-6-23/codex2api Codex2API is a self-hosted Go/Gin reverse proxy with an embedded React admin dashboard that turns a pool of Codex accounts into an OpenAI- … | 77 | 1983 | active |
| laravel/lumen Lumen is a fast PHP micro-framework from the Laravel project for building web applications and APIs with routing, middleware, database abst… | 10 | 7570 | maintenance |
| Starcounter-Jack/JSON-Patch A lean, high-performance JavaScript implementation of the JSON-Patch standard (RFC 6902) for updating JSON documents with delta patches. It… | 44 | 1982 | active |
| microsoft/azure-devops-mcp An MCP (Model Context Protocol) server from Microsoft that exposes Azure DevOps capabilities—projects, repos, builds, work items, test plan… | 84 | 1980 | active |
| tranxuanthang/lrclib A self-hostable server implementation of LRCLIB, a free service for finding and contributing synchronized lyrics, written in Rust with Axum… | 68 | 1979 | active |
| twitchtv/twirp Twirp is a simple RPC framework for Go that generates servers and clients from protobuf service definitions. It runs on the standard librar… | 23 | 7530 | maintenance |
| urfave/negroni Negroni is a tiny, idiomatic HTTP middleware library for Go that works directly with net/http handlers. It is not a framework; it lets you … | 65 | 7527 | maintenance |
| symfony/http-client-contracts A set of PHP interfaces and abstractions for HTTP clients, extracted from the Symfony components. It lets libraries depend on stable, battl… | 90 | 1972 | stable |
| alandtse/alexa_media_player A Home Assistant custom component that controls Amazon Alexa/Echo devices through the unofficial Alexa API, exposing them as media player e… | 97 | 1971 | active |
| burnash/gspread A Python client library for the Google Sheets API v4, providing a simple interface to open, read, write, format, and share spreadsheets. It… | 73 | 7503 | maintenance |
| haskell-servant/servant Servant is a Haskell DSL for describing web APIs at the type level, from which servers, clients, mocks, and documentation can be derived. I… | 77 | 1966 | active |
| algolia/react-instantsearch React InstantSearch is an open-source library by Algolia for building fast, filterable search interfaces in React and React Native apps. It… | 10 | 1965 | active |
| ugorji/go A high-performance, idiomatic Go codec/encoding library supporting binary and text formats including msgpack, cbor, json, binc, and simple.… | 93 | 1962 | stable |
| sangria-graphql/sangria Sangria is a spec-compliant GraphQL implementation library for Scala, providing schema definition, query parsing, validation, and execution… | 96 | 1961 | stable |
| GIScience/openrouteservice Openrouteservice is an open-source, Java-based routing service built on a fork of GraphHopper that consumes OpenStreetMap data. It exposes … | 94 | 1961 | stable |
| apple/swift-openapi-generator A Swift package plugin that generates type-safe Swift client and server code from OpenAPI 3.x documents at build time. Generated code is de… | 94 | 1961 | active |
| envoyproxy/ai-gateway Envoy AI Gateway is an open-source, Kubernetes-native gateway built on Envoy Gateway that manages traffic from application clients to Gener… | 88 | 1961 | stable |
| intruder-io/autoswagger Autoswagger is a Python command-line tool that discovers Swagger/OpenAPI specifications, parses their endpoints, and automatically tests th… | 34 | 1960 | active |
| LayerZero-Labs/LayerZero-v1 LayerZero is an omnichain interoperability protocol implemented as a set of gas-efficient, non-upgradable Solidity smart contracts for ligh… | 10 | 1954 | stable |
| tinylib/msgp A Go code generator and serialization library for MessagePack that generates fast marshal/unmarshal and encode/decode methods from Go type … | 87 | 1949 | active |
| marmelab/json-graphql-server A Node.js tool that spins up a full fake GraphQL API from a JSON data file with zero coding in under 30 seconds. Inspired by json-server, i… | 84 | 1949 | active |
| petertodd/python-bitcoinlib A Python 3 library providing a low-level, ground-up interface to Bitcoin data structures and protocol internals, including transactions, sc… | 28 | 1948 | active |
| cherrypy/cherrypy CherryPy is a pythonic, object-oriented HTTP framework for building web applications in Python. It lets developers write web apps as ordina… | 77 | 1946 | stable |
| gourouting/singo Singo is a Go starter framework that assembles Gin, GORM, Redis, sessions, CORS, i18n, and API testing into a simple single-service archite… | 70 | 1943 | active |
| rynfar/meridian Meridian is a proxy that bridges Anthropic's Claude Agent SDK to the standard Anthropic API format, letting a Claude Max subscription power… | 78 | 1941 | active |
| dromara/forest Forest is a high-level, lightweight declarative HTTP client framework for Java that lets developers send HTTP requests by defining annotate… | 67 | 1941 | active |
| Stichoza/google-translate-php A free PHP library that wraps Google Translate's unofficial API to translate text between languages without an API key. It also supports au… | 88 | 1937 | active |
| FoalTS/foal Foal (FoalTS) is a full-featured, TypeScript-based Node.js web framework that bundles a CLI, ORM (TypeORM), authentication, testing tools, … | 95 | 1934 | active |
| graphql-hive/graphql-scalars A TypeScript library of custom GraphQL scalar types (e.g., DateTime, EmailAddress, UUID, BigInt, URL) for building precise, type-safe Graph… | 94 | 1930 | stable |
| getml/reflect-cpp reflect-cpp is a C++20/C++26 library for fast serialization, deserialization, and validation using reflection, comparable to pydantic or se… | 85 | 1927 | active |
| riddleling/iOS-OCR-Server An iOS app that turns an iPhone into a local OCR server using Apple's Vision Framework, exposing an HTTP API and web interface for image te… | 74 | 1927 | active |
| nelmio/NelmioCorsBundle A Symfony bundle that adds Cross-Origin Resource Sharing (CORS) headers to responses with ACL-style per-URL configuration. It handles CORS … | 67 | 1925 | stable |
| O365/python-o365 A Python library providing a Pythonic wrapper around the Microsoft Graph and Office 365 REST APIs. It supports email, calendar, contacts, O… | 55 | 1923 | active |
| cognitect/transit-format Transit is a data interchange format and set of libraries for conveying typed values between applications written in different programming … | 63 | 1918 | stable |
| kriswallsmith/Buzz Buzz is a lightweight PHP HTTP client library for issuing HTTP requests, offering FileGetContents, Curl, and MultiCurl clients with PSR-7/P… | 75 | 1916 | stable |
| mtrudel/bandit Bandit is a pure Elixir HTTP server for Plug and WebSock applications, supporting HTTP/1.x, HTTP/2, and WebSockets over HTTP and HTTPS. It … | 77 | 1915 | stable |
| derekantrican/GAS-ICS-Sync A Google Apps Script that syncs ICS/ICAL calendar files into Google Calendar far more frequently than Google's built-in 12-24 hour refresh.… | 48 | 1914 | active |
| yint-tech/sekiro-open Sekiro is a multi-language, distributed service publishing platform that lets handlers written in various languages register with a central… | 67 | 1912 | active |
| LianjiaTech/retrofit-spring-boot-starter A Spring Boot starter that deeply integrates the Retrofit declarative HTTP client into Spring Boot applications, letting developers define … | 97 | 1911 | active |
| spatie/laravel-fractal A Laravel and Lumen package providing a fluent wrapper around League Fractal for transforming data before serving it in APIs. It simplifies… | 81 | 1909 | stable |
| starwing/lua-protobuf A C module for Lua (5.1-5.4 and LuaJIT) that encodes and decodes Google protobuf data, supporting both proto2 and proto3 syntax. It include… | 63 | 1909 | active |
| LetsFG/LetsFG LetsFG is an agent-native flight and hotel search and booking platform exposing its engine via a REST API, an MCP server, a CLI, and Python… | 81 | 1905 | active |
| featbit/featbit FeatBit is an open-source, self-hostable feature flag management platform with SDKs, A/B testing, experimentation, and progressive delivery… | 99 | 1904 | active |
| ssssssss-team/magic-api magic-api is a Java-based rapid API development framework that lets developers write scripts and configure HTTP interfaces through a web UI… | 45 | 1904 | stable |
| stackblitz-labs/pkg.pr.new pkg.pr.new is a continuous preview release service for open-source libraries that publishes npm-installable packages from every commit and … | 69 | 1901 | active |
| ccxt/go-binance A Go SDK providing complete client bindings for the Binance cryptocurrency exchange API. It implements all Binance REST APIs (spot, margin,… | 89 | 1899 | active |
| rapi-doc/RapiDoc RapiDoc is a lightweight web component (custom element) for viewing OpenAPI/Swagger specifications with a built-in API call console. It wor… | 64 | 1899 | active |
| jjjake/internetarchive A Python library and command-line tool (ia) for programmatically accessing Archive.org, including searching, downloading, and uploading ite… | 99 | 1898 | active |
| trevorhobenshield/twitter-api-client A Python library implementing X/Twitter's v1, v2, and GraphQL APIs for automation and scraping. It supports account actions like tweeting, … | 30 | 1894 | active |
| hank9999/kiro.rs A Rust-based proxy service that exposes an Anthropic Claude API-compatible endpoint and translates requests to the Kiro API. It supports SS… | 74 | 1893 | active |
| simoneb/axios-hooks A React hooks library wrapping the axios HTTP client, offering one-line data fetching with loading/error state, caching, and built-in serve… | 72 | 1892 | active |
| daptin/daptin Daptin is a self-hosted Go application server that turns declarative schema definitions into permission-aware JSON:API and GraphQL CRUD bac… | 98 | 1891 | active |
| simple-salesforce/simple-salesforce Simple Salesforce is a low-level Python client for the Salesforce.com REST and APEX APIs, returning API JSON responses as dictionaries. It … | 93 | 1890 | active |
| web-push-libs/web-push-php A PHP library implementing the Web Push protocol (RFC 8030) for sending push notifications to browsers via service workers. It handles subs… | 91 | 1890 | active |
| php-fig/http-factory PHP-FIG's PSR-17 interfaces describing factories for creating PSR-7 HTTP message objects (requests, responses, URIs, streams, uploaded file… | 23 | 1890 | stable |
| nearform/graphql-hooks graphql-hooks is a minimal, hooks-first GraphQL client for React with a tiny bundle size and full SSR support. It provides a concise useQue… | 79 | 1886 | active |