function: api-framework
1878 products, primary matches first, then adoption-weighted; health v2 shown.
| Product | Health v2 | Stars | Maturity |
|---|---|---|---|
| graphql-go/graphql graphql-go/graphql is a Go implementation of the GraphQL specification, following the official graphql-js reference implementation. It supp… | 62 | 10142 | stable |
| nopSolutions/nopCommerce nopCommerce is a free, open-source eCommerce platform and shopping cart built on ASP.NET Core with support for MS SQL Server, PostgreSQL, a… | 99 | 10131 | stable |
| akaunting/akaunting Akaunting is a free, open-source online accounting application for small businesses and freelancers, built with Laravel, VueJS, and Tailwin… | 94 | 10092 | active |
| Invoice Ninja Invoice Ninja is a source-available invoicing application for freelancers and small businesses, covering invoices, quotes, expenses, projec… | 95 | 10027 | active |
| go-swagger/go-swagger A Go implementation of the Swagger 2.0 (OpenAPI 2.0) specification with a CLI tool for working with swagger specs. It generates servers, cl… | 99 | 10006 | active |
| Grape Grape is an opinionated Ruby framework for building REST-like APIs, running on Rack or alongside Rails and Sinatra. It provides a simple DS… | 77 | 10003 | active |
| KeystoneJS KeystoneJS is a Node.js headless CMS and web application framework for defining schemas that generate a GraphQL API and an auto-generated A… | 99 | 9963 | active |
| presenton/presenton Presenton is an open-source AI presentation generator and API that creates editable PPTX and PDF slide decks from prompts, documents, or cu… | 82 | 9861 | active |
| OpenCTI-Platform/opencti OpenCTI is an open-source platform for managing cyber threat intelligence knowledge, including observables, TTPs, and threat actor informat… | 95 | 9854 | active |
| gorse-io/gorse Gorse is an AI-powered open-source recommender system engine written in Go that ingests items, users, and interaction feedback and automati… | 97 | 9808 | active |
| hiteshchoudhary/apihub FreeAPI is an open-source hub of free, production-style REST APIs (auth, e-commerce, social media, todos, and more) for practicing API inte… | 56 | 9706 | active |
| cooderl/wewe-rss WeWe RSS is a self-hostable service that generates RSS feeds for WeChat official accounts by leveraging WeRead as a data source. It support… | 10 | 9671 | active |
| Bluesky The official Bluesky Social client application for Web, iOS, and Android, built with React Native and TypeScript on top of the AT Protocol.… | 95 | 9615 | active |
| reactiveui/refit Refit is a type-safe REST client library for .NET that turns REST APIs into live C# interfaces, generating HttpClient-based implementations… | 99 | 9561 | active |
| flowable/flowable-engine Flowable is an open-source Java workflow and Business Process Management (BPM) platform providing fast BPMN process, CMMN case, and DMN rul… | 79 | 9493 | stable |
| swagger-api/swagger-editor Swagger Editor is a browser-based and embeddable editor for authoring OpenAPI and Swagger API specifications in YAML/JSON. It is available … | 95 | 9461 | active |
| evolution-foundation/evolution-api Evolution API is an open-source REST API for WhatsApp and multi-channel messaging, supporting both the Baileys-based WhatsApp Web API and t… | 79 | 9430 | active |
| vitalik/django-ninja Django Ninja is a web framework for building REST APIs with Django using Python type hints, powered by Pydantic for validation and serializ… | 99 | 9175 | stable |
| mark3labs/mcp-go A Go SDK implementing the Model Context Protocol (MCP), letting developers build MCP servers that expose tools, resources, and prompts to L… | 83 | 9035 | active |
| teamhanko/hanko Hanko is an open-source authentication and user management platform built in Go, offering passwords, passkeys (WebAuthn/FIDO2), MFA, OAuth … | 94 | 9015 | active |
| appleboy/gorush Gorush is a push notification micro server written in Go using the Gin framework. It exposes a REST API and CLI for sending notifications t… | 91 | 8761 | active |
| OwO-Network/DLX DLX (formerly DeepLX) is a self-hosted translation API server written in Go that exposes a simple HTTP API on port 1188 for machine transla… | 97 | 8683 | active |
| usekaneo/kaneo Kaneo is an open-source, self-hosted project management application with kanban boards, list views, labels, priorities, and GitHub/Gitea is… | 83 | 8550 | active |
| oapi-codegen/oapi-codegen oapi-codegen is a command-line tool and Go library that generates Go server boilerplate, API clients, and HTTP models from OpenAPI 3.0/3.1 … | 93 | 8534 | active |
| Sylius/Sylius Sylius is an open-source headless eCommerce platform and framework built on top of PHP/Symfony and API Platform. It provides a powerful RES… | 94 | 8515 | active |
| litestar-org/litestar Litestar is a production-ready, highly performant, extensible ASGI API framework for Python, formerly known as Starlite. It provides REST A… | 91 | 8419 | active |
| vendurehq/vendure Vendure is an open-source, plugin-first headless commerce platform built with TypeScript, NestJS, GraphQL, and a React admin dashboard. It … | 98 | 8376 | active |
| Graphene Graphene is a code-first Python library for building GraphQL schemas and APIs, with built-in Relay support and integrations for Django, SQL… | 52 | 8239 | stable |
| MichalLytek/type-graphql TypeGraphQL is a TypeScript framework for building GraphQL APIs using classes and decorators instead of SDL files, generating the schema fr… | 87 | 8091 | active |
| fonoster/fonoster Fonoster is an open-source programmable telecommunications stack (a Twilio alternative) for building voice and messaging applications, with… | 99 | 8080 | active |
| Project-OSRM/osrm-backend OSRM is a high-performance C++ routing engine built on OpenStreetMap data, exposing services via HTTP API, C++ library, and Node.js wrapper… | 98 | 8013 | active |
| SciPhi-AI/R2R R2R is a production-ready AI retrieval system implementing agentic Retrieval-Augmented Generation (RAG) with a RESTful API. It provides sta… | 50 | 7978 | active |
| hotheadhacker/no-as-a-service No-as-a-Service is a lightweight Express.js REST API that returns a random, witty rejection reason as JSON. It is hosted publicly and can a… | 56 | 7925 | stable |
| midwayjs/midway Midway is a progressive, TypeScript-first Node.js framework from Alibaba's Taobao frontend architecture team, built around a custom depende… | 99 | 7742 | active |
| btcpayserver/btcpayserver BTCPay Server is a free, open-source, self-hosted Bitcoin payment processor written in C#. It lets merchants accept direct, non-custodial B… | 99 | 7728 | stable |
| Traccar Traccar is an open-source GPS tracking server written in Java that supports 200+ GPS protocols and 2000+ tracking device models. It provide… | 99 | 7658 | stable |
| jianchang512/ChatTTS-ui A local web interface for the ChatTTS text-to-speech model that synthesizes speech from mixed Chinese/English text, numbers, and symbols. I… | 70 | 7640 | active |
| EricLBuehler/mistral.rs mistral.rs is a fast and flexible LLM inference engine written in Rust, supporting many model families with quantization (ISQ/UQFF, GGUF), … | 92 | 7628 | active |
| 42wim/matterbridge Matterbridge is a self-hosted chat bridge written in Go that relays messages between many chat platforms such as Slack, Discord, Telegram, … | 23 | 7555 | active |
| swagger-api/swagger-core Swagger Core is a Java library that implements the OpenAPI Specification, generating OpenAPI 3.x definitions from JAX-RS (javax and jakarta… | 99 | 7531 | stable |
| inventree/InvenTree InvenTree is an open-source inventory management system built with Python and Django, providing a web interface and REST API for tracking p… | 95 | 7454 | active |
| RicoSuter/NSwag NSwag is a Swagger/OpenAPI 2.0 and 3.0 toolchain for .NET, ASP.NET Core, and TypeScript, written in C#. It generates OpenAPI specifications… | 83 | 7358 | active |
| devlikeapro/waha WAHA is a self-hosted WhatsApp HTTP API that wraps multiple community engines (WEBJS, NOWEB, GOWS) behind a unified REST API and webhook in… | 94 | 7266 | active |
| mher/flower Flower is an open-source web application for monitoring and managing Celery clusters in real time. It provides a dashboard for task and wor… | 87 | 7235 | active |
| modelcontextprotocol/registry A community-driven registry service for Model Context Protocol (MCP) servers, acting like an app store where MCP clients can discover serve… | 86 | 7192 | active |
| goproxy/goproxy.cn Goproxy.cn is a free, non-profit Go module proxy service hosted in China and backed by Qiniu Cloud's global CDN. It fully implements the GO… | 49 | 7086 | stable |
| kubevirt/kubevirt KubeVirt is a virtual machine management add-on for Kubernetes that extends the Kubernetes API with virtualization resource types (like the… | 98 | 7030 | stable |
| hydro-dev/Hydro Hydro is a high-performance, self-hostable online judge platform for competitive programming and informatics education, built in TypeScript… | 67 | 6891 | active |
| requestly/requestly Requestly API Client is a lightweight, Git-native desktop API client for designing, building, and testing REST, GraphQL, SOAP, and gRPC API… | 91 | 6750 | active |
| kubernetes-sigs/metrics-server Metrics Server is a scalable, efficient source of container CPU and memory resource metrics for Kubernetes built-in autoscaling pipelines. … | 95 | 6710 | stable |
| thephpleague/oauth2-server A standards-compliant OAuth 2.0 authorization server library for PHP, supporting all major grants (authorization code, client credentials, … | 87 | 6662 | stable |
| internetarchive/openlibrary Open Library is an open, editable library catalog from the Internet Archive aiming to create one web page for every book ever published, wi… | 99 | 6634 | active |
| django-oscar/django-oscar Django-Oscar is a domain-driven e-commerce framework for Django that lets every part of the core be customized or overridden. It supports a… | 86 | 6624 | active |
| gotson/komga Komga is a self-hosted media server for comics, mangas, BDs, magazines and eBooks (CBZ/CBR, EPUB, PDF). It provides a responsive web UI, we… | 98 | 6604 | active |
| x402-foundation/x402 x402 is an open standard and SDK suite for internet-native payments built on the HTTP 402 status code, letting servers charge for API or co… | 65 | 6543 | active |
| QingdaoU/OnlineJudge A self-hosted online judge system for hosting programming contests and problem sets, built with Django (backend), Vue (frontend), and a Doc… | 23 | 6534 | stable |
| crestalnetwork/intentkit IntentKit is an open-source, self-hosted cloud-native agent cluster that runs and manages a collaborative team of AI agents as containerize… | 78 | 6510 | active |
| MISP/MISP MISP is an open source threat intelligence platform for collecting, storing, correlating, and sharing cyber security indicators, malware an… | 99 | 6490 | stable |
| filipedeschamps/tabnews.com.br TabNews is the open-source codebase of a Brazilian community website for programming and technology discussions, where users publish posts … | 77 | 6376 | active |
| jeequan/jeepay Jeepay is an open-source aggregated payment system for internet businesses, supporting normal merchant mode, multi-channel service-provider… | 84 | 6344 | active |
| pheralb/svgl SVGL is a curated library of 600+ optimized SVG logos for brands and technologies, served through a searchable web app and a free REST API.… | 70 | 6258 | active |
| graphql-java/graphql-java GraphQL Java is the standard JVM implementation of the GraphQL specification, providing schema parsing, schema generation, and query execut… | 95 | 6223 | stable |
| Passbolt Passbolt Community Edition API is the JSON backend for the open source, security-first password manager for teams, built in PHP on CakePHP.… | 98 | 6095 | stable |
| open-meteo/open-meteo Open-Meteo is an open-source weather API service that aggregates numerical weather prediction models from 15+ national weather services int… | 67 | 6093 | active |
| goadesign/goa Goa is a design-first framework for building APIs and microservices in Go. You define your API in a Go-based DSL and it generates server co… | 99 | 6089 | active |
| h2non/imaginary Imaginary is a fast HTTP microservice written in Go for high-level image processing, backed by bimg and libvips. It exposes image operation… | 46 | 6079 | stable |
| WeblateOrg/weblate Weblate is a libre, web-based continuous localization platform with tight version control (Git, Mercurial) integration, built in Python/Dja… | 98 | 6040 | stable |
| dmunozv04/iSponsorBlockTV A self-hosted Python application that connects to YouTube TV apps on smart TVs and streaming devices and automatically skips sponsor segmen… | 98 | 6019 | active |
| postmanlabs/postman-app-support Postman is a widely used API platform for building, testing, designing, and collaborating on APIs, offered as a desktop app and web service… | 64 | 6015 | active |
| basketikun/chatgpt2api A self-hosted reverse-engineered implementation of ChatGPT's official web interfaces, exposing OpenAI-compatible API endpoints for text gen… | 77 | 6012 | active |
| FastEndpoints/FastEndpoints FastEndpoints is a lightweight REST API development framework for ASP.NET 8 and newer that serves as a developer-friendly alternative to Mi… | 95 | 5999 | active |
| graphql-dotnet/graphql-dotnet A .NET implementation of the GraphQL query language, providing a lexer/parser, schema definition, and execution engine for building GraphQL… | 99 | 5992 | active |
| YMFE/yapi YApi is a self-hostable, visual API management platform for defining, documenting, mocking, and testing HTTP interfaces across developers, … | 23 | 27723 | maintenance |
| graphql-rust/juniper Juniper is a GraphQL server library for Rust that enables building type-safe, fast GraphQL servers. It provides schema declaration and reso… | 86 | 5971 | active |
| guardian/frontend The backend Scala application powering theguardian.com, built as a set of Play Framework 2 services. It fetches content from the Guardian's… | 77 | 5899 | active |
| zammad/zammad Zammad is a web-based, open-source helpdesk and customer support/ticketing platform that unifies customer communication across channels lik… | 77 | 5869 | stable |
| aiogram/aiogram aiogram is a modern, fully asynchronous Python framework for the Telegram Bot API, built on asyncio and aiohttp. It provides routers, middl… | 99 | 5847 | active |
| kserve/kserve KServe is a CNCF incubating, Kubernetes-native platform for serving both generative and predictive AI models at scale. It provides a standa… | 94 | 5834 | stable |
| microsoft/typespec TypeSpec is a Microsoft-built, extensible DSL and toolchain for defining cloud service APIs and data shapes as a single source of truth. It… | 94 | 5832 | active |
| Michael-A-Kuykendall/shimmy Shimmy is a single-binary, OpenAI-compatible LLM inference server written in pure Rust, running GGUF models on a WebGPU-based engine (Airfr… | 84 | 5808 | active |
| sooperset/mcp-atlassian A Model Context Protocol (MCP) server that connects AI assistants like Claude Desktop and Cursor to Atlassian Jira and Confluence, supporti… | 84 | 5797 | active |
| WebAssembly/WASI WASI (WebAssembly System Interface) is a set of standardized APIs that let WebAssembly modules access system resources like files, clocks, … | 94 | 5783 | active |
| ChilliCream/graphql-platform ChilliCream GraphQL Platform is a suite of open-source .NET tools for building GraphQL APIs, including the Hot Chocolate GraphQL server, th… | 98 | 5753 | active |
| TencentBlueKing/bk-cmdb BlueKing CMDB is an enterprise-grade configuration management database (CMDB) platform for managing IT assets, applications, and business t… | 77 | 5742 | active |
| killbill/killbill Kill Bill is an open-source subscription billing and payments platform that manages subscriptions, invoicing, payment processing, and dunni… | 94 | 5704 | stable |
| makenotion/notion-sdk-js The official JavaScript/TypeScript client library for the Notion REST API, published as @notionhq/client. It provides typed methods for que… | 98 | 5653 | stable |
| trailbaseio/trailbase TrailBase is an open-source, single-executable Firebase alternative built on Rust, SQLite (with experimental Postgres support), and Wasmtim… | 85 | 5571 | active |
| capcom6/android-sms-gateway An Android application that turns a smartphone into an SMS and MMS gateway, exposing a REST API for sending messages programmatically and w… | 95 | 5546 | active |
| middleapi/orpc oRPC is a TypeScript framework for building end-to-end typesafe APIs without code generation, combining RPC-style typed clients with first-… | 84 | 5510 | active |
| yournextstore/yournextstore Your Next Store is an open-source, AI-native Next.js e-commerce template powered by Stripe, with a typesafe Commerce Kit SDK. It is designe… | 68 | 5482 | active |
| lm-sys/RouteLLM RouteLLM is a Python framework for serving and evaluating LLM routers that route queries between strong and weak models to cut costs. It pr… | 24 | 5408 | active |
| agentejo/cockpit Cockpit is a self-hosted, API-first headless CMS written in PHP that adds content management to any site via REST/JSON APIs. It offers flex… | 32 | 5395 | active |
| ory/keto Ory Keto is an open-source authorization server implementing Google's Zanzibar model for scalable, low-latency permission checks. It suppor… | 80 | 5390 | active |
| remsky/Kokoro-FastAPI A Dockerized FastAPI wrapper around the Kokoro-82M text-to-speech model exposing an OpenAI-compatible speech endpoint with CPU, NVIDIA, AMD… | 88 | 5373 | active |
| winfunc/deepreasoning DeepReasoning is a high-performance Rust-based LLM inference API and chat UI that combines DeepSeek R1's chain-of-thought reasoning traces … | 31 | 5363 | active |
| PokeAPI/pokeapi PokeAPI is a free, open-source RESTful (and beta GraphQL) API serving comprehensive Pokémon game data such as species, moves, abilities, ty… | 67 | 5357 | active |
| novicezk/midjourney-proxy A Java-based proxy service that wraps MidJourney's Discord channel into a REST API, enabling programmatic AI image generation. It supports … | 45 | 5347 | active |
| solidusio/solidus Solidus is a free, open-source eCommerce platform built as a Ruby on Rails framework, providing a full storefront, admin dashboard, and com… | 92 | 5322 | active |
| zircote/swagger-php A PHP library that generates OpenAPI (Swagger) documentation for RESTful APIs using PHP 8 attributes or legacy doctrine annotations embedde… | 95 | 5306 | active |
| Exrick/xpay XPay is a free, self-hosted personal payment collection system written in Java (Spring Boot) that lets individuals accept payments via Alip… | 32 | 5294 | active |