domain: apis
2838 products, primary matches first, then adoption-weighted; health v2 shown.
| Product | Health v2 | Stars | Maturity |
|---|---|---|---|
| substrait-io/substrait Substrait is a cross-language specification and tooling for describing data compute operations as standardized relational algebra query pla… | 99 | 1549 | active |
| skernelx/tavily-key-generator A Python toolkit that automates signup flows for Tavily, Firecrawl, and Exa using real browser automation (Playwright/Camoufox), Turnstile … | 48 | 1549 | active |
| twilio/twilio-node The official Twilio helper library for Node.js, providing a typed client for the Twilio REST APIs including SMS, voice, and other communica… | 98 | 1546 | active |
| nithinmurali/pygsheets pygsheets is a Python library wrapping the Google Sheets API v4, providing intuitive models for spreadsheets, worksheets, cells, and data r… | 34 | 1545 | stable |
| digitalocean/godo Godo is the official Go client library for the DigitalOcean V2 API, covering infrastructure services like Droplets, Kubernetes, and Volumes… | 95 | 1544 | stable |
| finos/legend Legend is an end-to-end data platform from FINOS (originated at Goldman Sachs) covering the full data lifecycle: modeling, curation, queryi… | 77 | 1543 | active |
| blampe/rreading-glasses A drop-in replacement metadata service for the retired Readarr metadata API, serving book metadata from Goodreads or Hardcover. It works wi… | 65 | 1542 | active |
| lukasschwab/arxiv.py A Python client library wrapping the arXiv API for searching and retrieving academic paper metadata, PDFs, and source files. It provides a … | 92 | 1541 | stable |
| graphql/graphql-relay-js A library of helper functions for building Relay-compliant GraphQL servers using the GraphQL.js reference implementation. It provides utili… | 43 | 1541 | stable |
| wechatpay-apiv3/wechatpay-java The official Java SDK for WeChat Pay APIv3, consisting of a core library with automatic request signing, response verification, callback ha… | 37 | 1541 | active |
| dtolnay/typetag A Rust crate providing macros to make Serde trait objects serializable and deserializable. It lets you serialize &dyn Trait and round-trip … | 87 | 1537 | stable |
| ChromeDevTools/devtools-protocol The official repository for the Chrome DevTools Protocol (CDP), providing protocol definitions, documentation, and TypeScript type definiti… | 77 | 1537 | active |
| isaackogan/TikTokLive TikTokLive is an unofficial Python library that connects to any TikTok LIVE stream via a creator's @unique_id and receives real-time events… | 78 | 1535 | active |
| opticdev/optic Optic is a CLI tool for linting, diffing, and testing OpenAPI specifications. It catches breaking changes, generates specs from traffic, an… | 10 | 1535 | active |
| apache/httpcomponents-client Apache HttpComponents Client is the standard Java HTTP client library from the Apache HttpComponents project, supporting HTTP/1.1 and HTTP/… | 77 | 1534 | stable |
| jshttp/cookie A small Node.js library for parsing and serializing HTTP Cookie and Set-Cookie headers. It provides functions to convert cookie header stri… | 92 | 1532 | stable |
| ssoready/ssoready SSOReady is an open-source service and set of SDKs for adding enterprise SAML single sign-on and SCIM directory sync to any product. It exp… | 42 | 1532 | active |
| wiztools/rest-client A Java-based application for testing HTTP and RESTful web services, available as both a desktop GUI and a CLI for batch execution of saved … | 41 | 1532 | stable |
| chatop2020/AKStream AKStream is a cross-platform, software-defined NVR (network video recorder) management and control platform written in C# on .NET 6, integr… | 76 | 1529 | active |
| CuyZ/Valinor Valinor is a dependency-free PHP library that maps raw inputs like JSON or arrays into strongly-typed PHP objects, validating values and pr… | 98 | 1526 | active |
| zquestz/omniauth-google-oauth2 An OmniAuth strategy gem that enables Google OAuth2 authentication in Ruby applications. It integrates as Rack middleware (e.g., in Rails o… | 73 | 1523 | active |
| agentic-commerce-protocol/agentic-commerce-protocol The Agentic Commerce Protocol (ACP) is an open specification, maintained by OpenAI and Stripe, defining how AI agents, buyers, and business… | 59 | 1523 | active |
| elixir-grpc/grpc A full-featured Elixir implementation of the gRPC protocol supporting unary and streaming RPCs, interceptors, TLS, HTTP transcoding, and Pr… | 97 | 1522 | active |
| encode/apistar API Star is a Python toolkit for working with OpenAPI and Swagger schemas, providing schema validation, static API documentation generation… | 10 | 5543 | maintenance |
| getActivity/EasyHttp EasyHttp is a simple, easy-to-use Android HTTP request framework built on top of OkHttp. It provides a fluent API with features like multi-… | 82 | 1521 | active |
| nemesida-waf/waf-bypass WAF Bypass Tool is an open-source Python CLI tool that tests web application firewalls for false positives and false negatives using predef… | 83 | 1520 | active |
| nfephp-org/sped-nfe A PHP library for generating, signing, and transmitting Brazilian electronic fiscal documents (NF-e model 55 and NFC-e model 65) to SEFAZ a… | 66 | 1519 | active |
| the-guild-org/apollo-angular Apollo Angular is a fully-featured, production-ready caching GraphQL client for Angular, maintained by The Guild. It integrates Apollo Clie… | 98 | 1516 | stable |
| abalabahaha/eris Eris is a Node.js library for interfacing with the Discord API, providing a lightweight wrapper for building bots. It supports gateway even… | 43 | 1514 | active |
| OpenDDS/OpenDDS OpenDDS is an open-source C++ implementation of the OMG Data Distribution Service (DDS) specification for real-time publish-subscribe data … | 86 | 1513 | active |
| spatie/schema-org A PHP library providing a fluent builder for all Schema.org types and their properties, generating JSON-LD (ld+json) structured data markup… | 93 | 1512 | active |
| vlucas/frisby Frisby.js is a REST API testing framework built on top of Jest that provides a fluent, promise-based API for testing HTTP endpoints. It inc… | 60 | 1512 | active |
| royalrick/weapp A Go SDK for the server-side APIs of WeChat Mini Programs, wrapping endpoints like login (code2session), access tokens, and encrypted data … | 39 | 1510 | active |
| mike-engel/jwt-cli jwt-cli is a fast command-line tool written in Rust for decoding and encoding JSON Web Tokens (JWTs). It supports custom headers, arbitrary… | 67 | 1507 | active |
| nikitastupin/clairvoyance Clairvoyance is a Python CLI tool that recovers a GraphQL API's schema even when introspection is disabled, by probing field and type names… | 57 | 1506 | active |
| Redocly/redocly-cli Redocly CLI is an open-source command-line tool for working with OpenAPI, AsyncAPI, and Arazzo descriptions. It lints and validates API des… | 95 | 1504 | active |
| AzureAD/microsoft-authentication-library-for-dotnet Microsoft Authentication Library (MSAL) for .NET, part of the Microsoft identity platform. It enables .NET applications to acquire security… | 99 | 1502 | stable |
| softwaremill/sttp sttp is a popular open-source HTTP client library for Scala with a clean, type-safe request description API. It supports synchronous, Futur… | 97 | 1502 | active |
| Azure/data-api-builder Data API builder (DAB) is an open-source, no-code engine that auto-generates secure REST and GraphQL endpoints (plus MCP tools) from your d… | 92 | 1500 | active |
| massive-com/client-python The official Python client library for the Massive.com (formerly Polygon.io) REST and WebSocket APIs, providing access to stock, options, f… | 91 | 1499 | active |
| scottie1984/swagger-ui-express An Express middleware module that serves Swagger UI from a swagger.json (or generated spec) file, exposing interactive API documentation at… | 24 | 1497 | active |
| aio-libs/yarl yarl is a Python library providing a URL class for parsing, constructing, and manipulating URLs with automatic encoding and immutable seman… | 97 | 1494 | stable |
| microsoft/win32metadata Microsoft's tooling that generates machine-readable metadata (.winmd) for Win32 APIs in the Windows SDK. It enables automated generation of… | 95 | 1492 | active |
| simonlin1212/global-stock-data A self-contained Python-based Skill file that gives AI coding assistants (Claude Code, Codex, etc.) direct access to US stock market data f… | 77 | 1490 | active |
| RandomAPI/Randomuser.me-Node The Node.js source code powering randomuser.me, a free API that generates random user data (names, emails, addresses, IDs) for application … | 23 | 1490 | active |
| coder/agentapi AgentAPI is a Go-based HTTP server that exposes a unified REST API for controlling terminal coding agents like Claude Code, Aider, Goose, G… | 75 | 1489 | active |
| scientistproject/Scientist.net Scientist.net is a .NET library for carefully refactoring critical code paths by running old and new implementations side by side in produc… | 60 | 1488 | active |
| strophe/strophejs Strophe.js is a dependency-free JavaScript/TypeScript library for building real-time XMPP applications, supporting XMPP over WebSockets (RF… | 97 | 1487 | active |
| jhump/protoreflect A Go library providing rich reflection utilities for Protocol Buffers descriptors and gRPC, building on the standard protobuf Go runtime re… | 75 | 1487 | active |
| lidatong/dataclasses-json A Python library providing a simple decorator-based API for serializing dataclasses to and from JSON. It supports nested dataclasses, colle… | 59 | 1486 | stable |
| cloudfoundry/servicebroker The Open Service Broker API project defines a specification for a standard set of REST API endpoints that platforms like Cloud Foundry and … | 67 | 1483 | stable |
| hook0/hook0 Hook0 is an open-source (SSPL-1.0) webhooks-as-a-service platform written in Rust that lets SaaS developers deliver events to their users' … | 99 | 1481 | active |
| fossasia/veditor Veditor is a standalone, reusable video-review and transcoding pipeline built with FastAPI and RQ, backed by Postgres and Redis. It exposes… | 77 | 1478 | active |
| Alpaca-py (Alpaca Python SDK) The official Python SDK for Alpaca's commission-free trading APIs, providing REST and WebSocket/SSE interfaces for trading, account managem… | 98 | 1474 | active |
| rails-api/active_model_serializers ActiveModelSerializers is a Ruby library that provides an ActiveModel::Serializer implementation and Rails hooks for rendering model object… | 48 | 5341 | maintenance |
| msgpack/msgpack-java MessagePack serializer implementation for the JVM, providing fast and compact binary serialization as an alternative to JSON. It supports a… | 84 | 1473 | stable |
| googleapis/google-api-java-client Google's Java client library for accessing HTTP-based APIs, including generated libraries for Google APIs. It provides OAuth 2.0 support, l… | 77 | 1472 | stable |
| gleam-wisp/wisp Wisp is a practical, type-safe web framework for the Gleam language, built on the Mist HTTP server and the BEAM runtime. It is structured a… | 79 | 1471 | active |
| jsforce/jsforce JSforce is an isomorphic JavaScript/TypeScript library that wraps Salesforce APIs (REST, Bulk, Metadata, SOAP, Streaming, Tooling, and more… | 99 | 1470 | active |
| jeremydaly/lambda-api Lambda API is a lightweight Express.js-style web framework for Node.js designed specifically for AWS Lambda with API Gateway proxy integrat… | 95 | 1469 | active |
| softwaremill/tapir Tapir is a Scala library for describing HTTP APIs declaratively with type-safe endpoint definitions. Endpoints can be exposed as servers, c… | 94 | 1469 | active |
| VirusTotal/vt-cli The official VirusTotal command-line interface, written in Go, that lets users interact with VirusTotal's API from the terminal. It support… | 82 | 1464 | active |
| opendiffy/diffy Diffy is a differential testing tool that sends identical requests to a candidate service and a reference (primary/secondary) service, then… | 60 | 1461 | active |
| microlinkhq/unavatar unavatar.io is a unified avatar API that retrieves user profile images from a single URL by username, email, or domain across 72 platforms … | 95 | 1460 | active |
| deepentropy/tvscreener An unofficial Python library wrapping TradingView's Screener API to query stocks, crypto, forex, bonds, futures, and coins, returning resul… | 84 | 1456 | active |
| Phineas/lanyard Lanyard is a hosted and self-hostable Elixir service that exposes live Discord user presence and activity data through a REST API and WebSo… | 76 | 1453 | active |
| zipmark/rspec_api_documentation A Ruby gem that generates API documentation automatically from RSpec acceptance specs, primarily for Rails APIs. It produces HTML or JSON o… | 38 | 1452 | active |
| shridarpatil/whatomate Whatomate is an open-source, self-hosted WhatsApp Business platform shipped as a single Go binary with Docker support. It provides multi-te… | 69 | 1450 | active |
| watson-developer-cloud/python-sdk The official Python client library (pip package ibm-watson) for accessing IBM Watson AI services such as language, speech, and vision APIs.… | 68 | 1449 | active |
| sinaweibosdk/weibo_ios_sdk The official Sina Weibo iOS SDK, providing OAuth 2.0 authorization, SSO login, and sharing to Weibo from third-party iOS apps. It wraps the… | 74 | 1445 | active |
| rest-client/rest-client A simple HTTP and REST client library for Ruby with a Sinatra-inspired DSL for specifying actions like get, put, post, and delete. It handl… | 32 | 5212 | maintenance |
| tailcallhq/tailcall Tailcall is a high-performance GraphQL runtime written in Rust that lets you build GraphQL backends declaratively by annotating a GraphQL s… | 83 | 1443 | active |
| michaelhly/solana-py Solana.py is the base Python SDK for interacting with the Solana blockchain, enabling transaction building and calls to the Solana JSON RPC… | 96 | 1442 | active |
| GraphQL multipart request (file upload) A terminating Apollo Link for Apollo Client that sends GraphQL multipart requests when variables contain files (FileList, File, or Blob), f… | 85 | 1442 | active |
| googleapis/google-http-java-client Google's flexible and efficient Java library for making HTTP requests to any resource on the web. It features a pluggable transport abstrac… | 90 | 1441 | stable |
| Shopify/graphql-batch A query batching executor for the Ruby graphql gem that lets GraphQL resolvers batch database lookups via custom loader classes. Loaders re… | 68 | 1441 | stable |
| fawney19/Aether Aether is a self-hosted AI API gateway written in Rust that provides a unified entry point for Claude, OpenAI, Gemini, and their CLI client… | 80 | 1439 | active |
| rstudio/plumber Plumber is an R package that converts annotated R functions into RESTful web API endpoints using roxygen2-style comments. It handles routin… | 70 | 1438 | active |
| AnimechanOrg/animechan Animechan is a REST API service that serves anime quotes, character details, and series information from a curated collection of thousands … | 65 | 1436 | active |
| laruence/yar Yar is a lightweight, concurrent RPC framework implemented as a native PHP extension (written in C), supporting HTTP, HTTPS, and TCP transp… | 86 | 1435 | stable |
| XAMPPRocky/octocrab Octocrab is a modern, extensible GitHub API client library for Rust. It offers a strongly typed semantic API covering most GitHub endpoints… | 95 | 1434 | active |
| rogchap/wombat Wombat is a cross-platform desktop GUI client for gRPC, built with Go and Wails using a Svelte frontend. It parses proto definitions (or us… | 23 | 1431 | active |
| crobertsbmw/deckofcards A REST API service that simulates drawing from one or more decks of playing cards, with shuffle, draw, and pile management endpoints. It is… | 46 | 1425 | stable |
| rails-api/rails-api Rails::API is a slimmed-down subset of Rails tailored for building API-only applications that serve JSON without the full middleware stack … | 32 | 5129 | maintenance |
| aio-libs/aiobotocore aiobotocore is an asynchronous Python client for AWS services, built on botocore and aiohttp/asyncio. It provides a mostly full-featured as… | 98 | 1424 | active |
| googleapis/google-cloud-ruby The official Google Cloud Client Library for Ruby, a monorepo of idiomatic RubyGems for calling Google Cloud Platform APIs such as Cloud St… | 95 | 1424 | stable |
| jitsi/lib-jitsi-meet lib-jitsi-meet is a low-level JavaScript API library for building fully custom video conferencing experiences on top of Jitsi Meet infrastr… | 95 | 1419 | active |
| elixir-mint/mint Mint is a functional, low-level HTTP client library for Elixir supporting HTTP/1.1 and HTTP/2. It uses a process-less architecture where co… | 76 | 1418 | active |
| 3Hren/msgpack-rust RMP is a complete pure-Rust implementation of the MessagePack binary serialization format, provided as three crates: a low-level encoder/de… | 49 | 1417 | stable |
| symfony/web-link A Symfony component that manages links between resources via the Link HTTP header, implementing PSR-13, RFC 8288, RFC 9264 (Linkset), and R… | 94 | 1416 | stable |
| bundesAPI/deutschland A Python package bundling easy access to many valuable German public APIs and datasets, including geographic data, company financial report… | 58 | 1416 | active |
| http-rs/tide Tide is a minimal and pragmatic async web application framework for Rust, built on async-std, that provides routing, middleware, cookies, s… | 23 | 5094 | maintenance |
| rage-rb/rage Rage is an API-first Ruby web framework that combines Rails-compatible ergonomics with fiber-based concurrency, running web requests, WebSo… | 89 | 1409 | active |
| Prismer-AI/PrismerCloud Prismer Cloud is a hosted/self-hostable knowledge infrastructure platform for AI agents, providing context fetching and compression, docume… | 73 | 1409 | active |
| jpmonette/feed A TypeScript library for Node.js that generates RSS 2.0, Atom 1.0, and JSON Feed 1.0 syndication feeds. It provides a simple, strongly-type… | 89 | 1408 | stable |
| marshmallow-code/webargs webargs is a Python library for declarative parsing and validation of HTTP request arguments (query, form, JSON, headers, files), built on … | 76 | 1406 | stable |
| koxudaxi/fastapi-code-generator A Python CLI tool that generates a FastAPI application, including Pydantic models and routers, from an OpenAPI document. It builds on datam… | 96 | 1405 | active |
| rails/activeresource Active Resource is a Ruby library that maps model classes to remote REST web services, providing an object-relational-mapping-style wrapper… | 81 | 1404 | active |
| googleapis/google-auth-library-php Google's officially supported PHP client library for OAuth 2.0 authentication and authorization with Google APIs. It implements Application… | 97 | 1403 | stable |
| GREsau/schemars Schemars is a Rust library that generates JSON Schema documents from Rust types via a JsonSchema trait and #[derive(JsonSchema)] macro. It … | 96 | 1403 | stable |