domain: backend
4128 products, primary matches first, then adoption-weighted; health v2 shown.
| Product | Health v2 | Stars | Maturity |
|---|---|---|---|
| rqlite/rqlite rqlite is a lightweight, fault-tolerant distributed relational database built on SQLite, replicating data across nodes using the Raft conse… | 96 | 17721 | stable |
| tigerbeetle/tigerbeetle TigerBeetle is a purpose-built financial transactions database written in Zig, designed for mission-critical safety and performance in onli… | 92 | 16951 | active |
| googleapis/mcp-toolbox MCP Toolbox for Databases is an open source Model Context Protocol (MCP) server, written in Go, that connects AI agents, IDEs, and applicat… | 91 | 16307 | active |
| scalar/scalar Scalar is an open-source API platform centered on rendering beautiful interactive API references from OpenAPI/Swagger documents, with a bui… | 91 | 16047 | active |
| NodeBB/NodeBB NodeBB is open-source forum software built on Node.js that supports Redis, MongoDB, or PostgreSQL backends and uses web sockets for real-ti… | 95 | 15214 | stable |
| zitadel/zitadel ZITADEL is an open-source identity and access management (IAM) platform providing authentication and authorization out of the box, includin… | 96 | 14935 | active |
| ajv-validator/ajv Ajv is the fastest JSON Schema validator for JavaScript, compiling declarative schemas into optimized validation functions. It supports JSO… | 80 | 14819 | stable |
| Lemmy Lemmy is a self-hosted, federated link aggregator and discussion forum for the fediverse, similar to Reddit or Hacker News, built in Rust w… | 92 | 14577 | active |
| benbjohnson/litestream Litestream is a standalone disaster recovery tool for SQLite that runs as a background process and continuously streams database changes to… | 100 | 14345 | active |
| arut/nginx-rtmp-module An NGINX module that turns the nginx web server into a media streaming server supporting RTMP, HLS, and MPEG-DASH. It handles live streamin… | 32 | 14033 | stable |
| OpenNHP/opennhp OpenNHP is a lightweight, cryptography-powered open-source toolkit written in Go that implements the Cloud Security Alliance's Network-infr… | 94 | 13922 | active |
| rmyndharis/OpenWA OpenWA is a free, MIT-licensed, self-hosted WhatsApp API Gateway that wraps WhatsApp connections in a REST API with webhooks, a React dashb… | 79 | 13719 | active |
| projectlombok/lombok Project Lombok is a Java library that plugs into compilers (javac, ECJ) and build tools to automatically generate boilerplate code like get… | 77 | 13475 | stable |
| macrozheng/mall-swarm mall-swarm is a microservices-based e-commerce mall system built with Spring Cloud Alibaba, Spring Boot 3.5, Sa-Token, MyBatis, Elasticsear… | 65 | 13117 | active |
| apache/zookeeper Apache ZooKeeper is a high-performance, fault-tolerant coordination service for distributed applications, exposing a hierarchical key-value… | 77 | 12794 | stable |
| citusdata/citus Citus is an open-source PostgreSQL extension (written in C) that transforms Postgres into a distributed database by sharding tables across … | 99 | 12745 | active |
| drakkan/sftpgo SFTPGo is a full-featured, highly configurable file transfer server supporting SFTP, SCP, FTP/S, HTTP/S, and WebDAV, with pluggable storage… | 93 | 12484 | active |
| tadata-org/fastapi_mcp FastAPI-MCP is a Python library that automatically exposes FastAPI endpoints as Model Context Protocol (MCP) tools, preserving request/resp… | 46 | 11999 | active |
| lodash/lodash Lodash is a modern JavaScript utility library providing modular, high-performance helper functions for working with arrays, objects, string… | 87 | 61278 | maintenance |
| misskey-dev/misskey Misskey is an open-source, federated microblogging platform built on the ActivityPub protocol, part of the Fediverse. It is a self-hostable… | 98 | 11311 | active |
| apache/thrift Apache Thrift is a lightweight, language-independent software stack for point-to-point RPC, combining an interface definition language, a c… | 86 | 10957 | stable |
| protobufjs/protobuf.js A high-performance, conformant JavaScript/TypeScript implementation of Protocol Buffers that works with .proto schemas without requiring pr… | 95 | 10584 | active |
| yugabyte/yugabyte-db YugabyteDB is an open-source, PostgreSQL-compatible distributed SQL database built for cloud-native, mission-critical OLTP applications. It… | 96 | 10510 | stable |
| evershopcommerce/evershop EverShop is an open-source, TypeScript-first e-commerce platform built with Node.js, React, and GraphQL, featuring a modular architecture w… | 90 | 10436 | active |
| apache/cassandra Apache Cassandra is an open-source NoSQL distributed wide-column database written in Java, designed for linear scalability and fault tolera… | 77 | 10092 | stable |
| 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 |
| OpenFeign/feign Feign is a Java library that simplifies writing HTTP clients by binding annotated interfaces to templatized HTTP requests. It supports plug… | 99 | 9798 | stable |
| 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 | 9733 | active |
| GetBindu/Bindu Bindu is an open-source Python framework that provides the identity, communication, and payments layer for AI agents, implementing the A2A … | 82 | 9712 | active |
| spring-projects/spring-petclinic Spring PetClinic is the official Spring sample application: a Spring Boot web app that manages a veterinary clinic's owners, pets, veterina… | 77 | 9498 | active |
| spring-projects/spring-ai Spring AI is an application framework for AI engineering that provides Spring-friendly, portable abstractions for integrating AI models int… | 96 | 9400 | active |
| pocket-id/pocket-id Pocket ID is a self-hosted, OpenID Connect Certified identity provider that lets users sign in to applications using passkeys instead of pa… | 86 | 9094 | active |
| 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… | 85 | 9059 | active |
| cookieY/Yearning Yearning is a self-hosted web-based SQL audit platform for MySQL, providing audit tickets with approval workflows, automated syntax checkin… | 78 | 8969 | active |
| owncloud/core ownCloud Core is the server-side component of ownCloud Classic, a self-hosted file storage, sync, and sharing platform written in PHP. It p… | 98 | 8827 | stable |
| 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 | 8557 | active |
| openapi-ts/openapi-typescript A monorepo of tools for consuming OpenAPI schemas in TypeScript, centered on openapi-typescript which converts OpenAPI 3.0/3.1 specs into s… | 85 | 8348 | stable |
| tinyauthapp/tinyauth Tinyauth is a lightweight, OpenID Certified™ authentication and authorization server written in Go, shipped as a single static binary. It w… | 87 | 8199 | active |
| warp-tech/warpgate Warpgate is an open-source, clientless bastion host and privileged access management (PAM) tool written in Rust that transparently proxies … | 100 | 7793 | active |
| 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 | 7503 | active |
| fabiolb/fabio Fabio is an HTTP, HTTPS, TCP, and gRPC reverse proxy and load balancer that configures itself dynamically from service data stored in Consu… | 94 | 7340 | active |
| telepresenceio/telepresence Telepresence is a CNCF open-source CLI tool that connects a developer's workstation to a remote Kubernetes or OpenShift cluster, creating a… | 97 | 7289 | active |
| presidentbeef/brakeman Brakeman is a free, open-source static analysis security scanner built specifically for Ruby on Rails applications. It analyzes Rails sourc… | 93 | 7266 | stable |
| hhyo/Archery Archery is a self-hosted SQL audit and query platform built with Django. It provides SQL review, execution, querying, backup, session and a… | 82 | 7033 | active |
| paper-trail-gem/paper_trail PaperTrail is a Ruby gem that tracks changes to Rails ActiveRecord models, recording every create, update, and destroy as versioned snapsho… | 59 | 7028 | stable |
| dinerojs/dinero.js Dinero.js is a JavaScript and TypeScript library for creating, calculating, converting, comparing, and formatting monetary values safely. I… | 91 | 6793 | stable |
| thephpleague/oauth2-server A standards-compliant OAuth 2.0 authorization server library for PHP, supporting all major grants (authorization code, client credentials, … | 87 | 6660 | stable |
| Javen205/IJPay IJPay is a lightweight Java payment SDK that wraps WeChat Pay, Alipay, QQ Pay, JD Pay, UnionPay, and PayPal into a unified, framework-agnos… | 30 | 6582 | active |
| tbphp/gpt-load GPT-Load is a high-performance, enterprise-grade AI API transparent proxy service built in Go that aggregates multiple AI providers (OpenAI… | 86 | 6519 | active |
| apache/camel Apache Camel is an open-source integration framework offering 350+ connectors for databases, APIs, message brokers, and cloud services, wit… | 77 | 6312 | stable |
| sanity-io/sanity Sanity Studio is an open-source, fully customizable headless CMS application built with React and TypeScript for rapidly configuring conten… | 95 | 6309 | active |
| Aspire Aspire is a multi-language, code-first toolchain from Microsoft for composing, running, debugging, and deploying distributed applications. … | 95 | 6285 | active |
| aws/aws-sdk-php The official AWS SDK for PHP (version 3), providing idiomatic PHP client APIs for over 400 Amazon Web Services including S3, DynamoDB, EC2,… | 96 | 6204 | stable |
| foxcpp/maddy Maddy is a composable all-in-one mail server written in Go that combines an SMTP MTA/MX, IMAP storage, and email security protocols (DKIM, … | 94 | 6079 | active |
| dolanmiu/docx docx is a JavaScript/TypeScript library for generating and modifying Microsoft Word .docx files with a declarative API. It runs in both Nod… | 92 | 5899 | stable |
| samchon/typia Typia is a TypeScript transformer library that compiles pure TypeScript types into super-fast runtime validators, JSON serializers/parsers,… | 96 | 5894 | active |
| opencloud-eu/opencloud OpenCloud is an open source file management, sharing, and collaboration platform written in Go, positioned as a sovereign alternative to Ne… | 88 | 5884 | active |
| goproxyio/goproxy A Go module proxy server that caches and serves Go modules, available both as a hosted global service (goproxy.io) and as a self-hostable b… | 23 | 5871 | active |
| easegress-io/easegress Easegress is a cloud-native traffic orchestration system that acts as an API gateway, reverse proxy, and traffic manager with built-in Raft… | 83 | 5868 | active |
| ffay/lanproxy lanproxy is a self-hosted NAT traversal / reverse proxy tool that exposes machines behind a firewall to the public internet by forwarding T… | 45 | 5852 | active |
| hacdias/webdav A simple, standalone WebDAV server written in Go, distributable as a single binary or Docker image. It supports user authentication, TLS, a… | 100 | 5821 | active |
| mscdex/ssh2 SSH2 client and server modules written in pure JavaScript for Node.js. It supports exec, shell, SFTP, port forwarding, and custom HTTP(S) a… | 76 | 5820 | stable |
| 201206030/novel novel is a learning-oriented, full-stack novel/fiction CMS built with Spring Boot 3 and Vue 3 in a front-end/back-end separated architectur… | 67 | 5810 | active |
| aidlearning/AidLearning-FrameWork AidLux (originally AidLearning) is an AIoT development platform that runs a native Ubuntu Linux environment with GUI, deep learning tooling… | 69 | 5801 | active |
| go-pay/gopay GoPay is an aggregated payment SDK for Go that wraps WeChat Pay, Alipay, Douyin Pay, PayPal, Apple Pay, QQ Pay, Allinpay, Lakala, CMB, and … | 98 | 5744 | active |
| partykit/partykit PartyKit is a framework and platform for building realtime multiplayer applications using JavaScript/TypeScript servers ('parties') deploye… | 62 | 5700 | active |
| kgateway-dev/kgateway kgateway is a Kubernetes-native API gateway and ingress controller that implements the Kubernetes Gateway API as a control plane for Envoy … | 95 | 5682 | stable |
| lizhipay/acg-faka A self-hosted PHP e-commerce application for selling digital goods and card keys (faka), with an anime/2D-culture themed storefront. It inc… | 100 | 5549 | active |
| permitio/opal OPAL (Open Policy Administration Layer) is an administration layer for policy engines such as Open Policy Agent (OPA) and Cedar Agent. It d… | 100 | 5504 | 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 | 5484 | active |
| sadmann7/skateshop An open-source e-commerce skateshop web application built with Next.js 14 and the T3 stack, featuring a storefront, seller and customer wor… | 36 | 5448 | active |
| leokhoa/laragon Laragon is a portable, isolated, lightweight development environment for Windows that bundles and orchestrates PHP, Node.js, Python, Apache… | 93 | 5401 | active |
| apache/opendal Apache OpenDAL is an Open Data Access Layer providing one unified API to access object storage, file systems, cloud SaaS, databases, protoc… | 100 | 5366 | stable |
| Pay An elegant PHP payment SDK supporting Alipay, WeChat Pay, UnionPay (Unipay), Douyin Pay, and Jiangsu Bank e-payment gateways. It features a… | 87 | 5362 | stable |
| hey-api/hey-api Hey API is an ecosystem of code generators that turn OpenAPI specifications into production-ready SDKs, types, validators, and mocks. Its f… | 85 | 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 | 5345 | active |
| QOR QOR is a set of modular Go libraries that abstract common features needed for building business applications, CMSs, and e-commerce systems,… | 68 | 5344 | active |
| kanidm/kanidm Kanidm is a simple, secure, and fast identity management platform written in Rust that acts as a complete identity provider for other appli… | 98 | 5330 | active |
| silenceper/wechat A simple and easy-to-use WeChat SDK for Go covering Official Accounts, Mini Programs, Mini Games, WeChat Pay, Open Platform, and WeCom (Ent… | 90 | 5297 | active |
| devspace-sh/devspace DevSpace is a client-only, open-source CLI tool for Kubernetes that automates image building and deployment workflows and lets developers b… | 89 | 5169 | active |
| taubyte/tau Taubyte (tau) is an open-source, self-hosted fullstack cloud platform that lets developers and AI coding agents build, test, and ship appli… | 80 | 5133 | active |
| mediacms-io/mediacms MediaCMS is an open source, self-hosted video and media CMS built with Django and React, exposing a REST API. It supports video, audio, ima… | 98 | 5093 | active |
| jazzband/django-silk django-silk (Silk) is a live profiling and inspection tool for the Django framework. It intercepts and stores HTTP requests and database qu… | 94 | 4994 | active |
| Bitcore Bitcore is a full-stack monorepo from BitPay providing infrastructure for building Bitcoin and blockchain-based applications, including a b… | 67 | 4985 | active |
| statamic/cms Statamic is a flat-first, Laravel-powered content management system distributed as a Composer package that installs into an existing Larave… | 95 | 4883 | active |
| antoniomika/sish sish is an open-source, self-hostable SSH server that provides HTTP(S), WebSocket(S), and TCP tunnels to localhost, serving as an ngrok/ser… | 86 | 4707 | active |
| linhaojun857/aurora Aurora is a self-hosted, front-end/back-end separated personal blog system built with SpringBoot (Java) and Vue. It includes an admin dashb… | 44 | 4665 | active |
| get-convex/chef Chef is an AI-powered full-stack web app builder by the Convex team, forked from bolt.diy, that generates apps with a built-in reactive dat… | 54 | 4606 | active |
| activemerchant/active_merchant Active Merchant is a Ruby payment abstraction library extracted from Shopify that provides a unified API across dozens of payment gateways.… | 45 | 4600 | stable |
| JetBrains/koog Koog is a JetBrains-built Kotlin/Java framework for creating fault-tolerant, enterprise-ready AI agents on the JVM, with multiplatform depl… | 87 | 4554 | active |
| emissary-ingress/emissary Emissary-ingress is an open-source, Kubernetes-native API gateway, Layer 7 load balancer, and Kubernetes Ingress built on Envoy Proxy. It i… | 86 | 4520 | stable |
| googleapis/google-cloud-go The official Google Cloud Client Libraries for Go, providing idiomatic Go packages for accessing Google Cloud Platform services such as Sto… | 96 | 4503 | active |
| rocboss/paopao-ce PaoPao is an open-source, self-hosted micro-community (social) platform combining a Go/Gin backend with a Vue 3 + Naive UI web frontend and… | 66 | 4502 | active |
| rivet-dev/agentos agentOS is a library that gives AI agents a lightweight operating system running inside your existing backend process, using WebAssembly an… | 93 | 4453 | active |
| tapexyz/tape Tape is an open-source, decentralized video and media-sharing platform built as a TypeScript monorepo with web, API, embed player, and smar… | 60 | 4452 | active |
| ankane/strong_migrations A Ruby gem for Rails that catches unsafe database migrations in development by detecting potentially dangerous operations like removing col… | 76 | 4440 | stable |
| opcodesio/log-viewer A Laravel package providing a fast, browser-based UI for viewing, searching, and filtering application log files. It supports Laravel, Hori… | 89 | 4435 | active |
| IBM/mcp-context-forge ContextForge is an open-source AI gateway, registry, and proxy from IBM that federates MCP, A2A, and REST/gRPC APIs behind a unified endpoi… | 86 | 4416 | active |
| embabel/embabel-agent Embabel Agent is an agentic AI framework for the JVM, written in Kotlin with first-class Java and Spring Boot support. It provides typed, g… | 86 | 4415 | active |
| wechatpy/wechatpy wechatpy is a third-party Python SDK for the WeChat (微信) official platform ecosystem. It wraps APIs for official accounts, WeChat Pay, WeCo… | 60 | 4302 | active |