domain: backend
4128 products, primary matches first, then adoption-weighted; health v2 shown.
| Product | Health v2 | Stars | Maturity |
|---|---|---|---|
| yesodweb/yesod Yesod is a type-safe, RESTful web framework for Haskell built on the WAI interface, featuring compile-time-checked routing, templating, and… | 75 | 2723 | active |
| twitter/util Twitter Util is a collection of small, idiomatic, general-purpose JVM libraries written in Scala, including concurrency primitives (a non-a… | 48 | 2719 | stable |
| bcosca/fatfree Fat-Free Framework (F3) is a lightweight PHP micro-framework condensed into a single file for building dynamic web applications quickly. It… | 84 | 2714 | stable |
| coreos/go-systemd Go bindings for systemd covering socket activation, sd_notify service notifications, the D-Bus API, journald read/write, logind, machined, … | 77 | 2711 | stable |
| alberliu/gim GIM is a high-performance instant messaging server written in Go, designed as a set of service components (connect, logic, business) that c… | 82 | 2709 | active |
| splitrb/split Split is a Rack-based A/B testing framework for Ruby web applications, working with Rails, Sinatra, or any Rack-compatible app. It uses Red… | 67 | 2707 | active |
| excid3/noticed Noticed is a Ruby gem for sending notifications in Ruby on Rails applications across multiple delivery methods like email, SMS, Slack, and … | 76 | 2703 | active |
| join-monster/join-monster Join Monster is a JavaScript library that acts as a query execution layer between GraphQL and SQL databases, translating GraphQL queries in… | 39 | 2701 | active |
| facebook/fbthrift Facebook's evolved branch of Apache Thrift, providing a serialization and RPC framework with a rewritten compiler and a fully asynchronous … | 67 | 2697 | active |
| BeanieODM/beanie Beanie is an asynchronous Python object-document mapper (ODM) for MongoDB, with data models built on Pydantic. Each MongoDB collection maps… | 83 | 2695 | active |
| zhangyuang/ssr An out-of-the-box server-side rendering (SSR) framework for React and Vue2/Vue3 applications, built on a plugin architecture that supports … | 76 | 2695 | active |
| serenity-is/Serenity Serenity is an ASP.NET Core / TypeScript application platform for building data-centric business applications with a service-based architec… | 98 | 2693 | active |
| apache/cassandra-gocql-driver gocql is the official Apache Cassandra driver for Go, implementing a fast and robust client over Cassandra's native transport protocol. It … | 85 | 2692 | active |
| yzcheng90/x-springboot X-SpringBoot is a lightweight Java rapid development platform built on Spring Boot 3 and JDK 21 with virtual threads, offering RBAC permiss… | 57 | 2692 | active |
| fnc12/sqlite_orm A lightweight, header-only SQLite ORM library for modern C++ (C++14/17/20). It lets you perform CRUD operations and queries with an intuiti… | 67 | 2691 | active |
| walkor/webman Webman is a high-performance PHP web framework built on Workerman that integrates HTTP, WebSocket, TCP, and UDP services. It uses resident … | 80 | 2688 | active |
| envoyproxy/ratelimit A Go/gRPC rate limiting service from the Envoy project that provides centralized, generic rate limiting for distributed applications. It st… | 67 | 2686 | active |
| Bouncy Castle Bouncy Castle is a comprehensive open-source cryptographic library for Java (and C#/.NET) implementing a wide range of algorithms, a JCA/JC… | 77 | 2683 | stable |
| symfony/validator The Symfony Validator component provides tools to validate values against configurable rules (constraints), following the JSR-303 Bean Vali… | 95 | 2681 | stable |
| sunscrapers/djoser Djoser is a Python library providing REST endpoints for Django's authentication system via Django REST Framework. It offers views for regis… | 88 | 2681 | active |
| django/daphne Daphne is an HTTP, HTTP/2, and WebSocket protocol server for ASGI applications, built to power Django Channels. It automatically negotiates… | 74 | 2679 | stable |
| elixir-broadway/broadway Broadway is an Elixir library for building concurrent, multi-stage data ingestion and processing pipelines on top of GenStage. It provides … | 75 | 2677 | stable |
| scambra/devise_invitable A Ruby gem that extends the Devise authentication framework for Rails with invitation functionality. It lets authenticated users invite oth… | 75 | 2676 | active |
| laracasts/flash A Laravel composer package that provides an easy, Bootstrap-optimized flash messaging setup. It offers a fluent flash() helper for success,… | 67 | 2674 | stable |
| vmihailenco/msgpack A MessagePack encoding library for Go, providing fast binary serialization as a drop-in replacement for encoding/. It supports structs, map… | 23 | 2673 | stable |
| maypok86/otter Otter is a high-performance in-memory caching library for Go based on adaptive W-TinyLFU eviction. It offers a configurable API with size-b… | 77 | 2672 | active |
| doug-martin/goqu goqu is an expressive SQL query builder and executor library for Go, supporting multiple database dialects like PostgreSQL, MySQL, SQLite3,… | 23 | 2671 | stable |
| symfony/error-handler The Symfony ErrorHandler component provides tools to manage errors and ease debugging PHP code, converting PHP errors and notices into exce… | 99 | 2670 | stable |
| moka-rs/moka Moka is a fast, concurrent in-memory caching library for Rust, inspired by Java's Caffeine. It provides thread-safe synchronous and async c… | 93 | 2670 | stable |
| krakend/krakend-ce KrakenD Community Edition is an open-source, stateless, high-performance API Gateway written in Go that aggregates, transforms, secures, an… | 99 | 2668 | stable |
| vladmihalcea/hypersistence-utils Hypersistence Utils (formerly Hibernate Types) is a Java library providing extra Hibernate custom types and Spring utilities for the data a… | 76 | 2668 | active |
| slick/slick Slick is a strongly-typed database query and access library for Scala that lets you work with relational databases as if they were Scala co… | 70 | 2664 | active |
| mybatis-flex/mybatis-flex MyBatis-Flex is a lightweight enhancement framework for MyBatis that adds fluent QueryWrapper-based CRUD, pagination, multi-table queries, … | 92 | 2661 | active |
| django-commons/django-unicorn Django Unicorn is a reactive component framework for Django that adds rich, interactive front-end functionality to Django templates using o… | 83 | 2661 | active |
| mongodb/mongo-java-driver The official MongoDB drivers for the JVM, providing APIs for Java, Kotlin (including coroutines), and Scala to connect to and work with Mon… | 99 | 2659 | stable |
| skytable/skytable Skytable is a modern, scalable NoSQL database server written in Rust, featuring BlueQL, a SQL-based query language hardened against injecti… | 58 | 2659 | active |
| rebus-org/Rebus Rebus is a lean, free service bus implementation for .NET that provides asynchronous messaging between services following the 'smart endpoi… | 76 | 2657 | stable |
| apache/casbin-jcasbin jCasbin is an Apache-licensed Java authorization library that enforces access control using models such as ACL, RBAC, and ABAC defined in c… | 88 | 2652 | stable |
| dolthub/go-mysql-server A MySQL-compatible SQL engine and server written in Go that runs queries over arbitrary data sources using the MySQL dialect and wire proto… | 70 | 2652 | active |
| scalatra/scalatra Scalatra is a tiny, Sinatra-inspired web micro-framework for Scala that runs on the JVM. It lets developers build high-performance, asynchr… | 76 | 2650 | active |
| useautumn/autumn Autumn is an open-source billing and pricing platform that acts as a control layer between Stripe and your application, managing subscripti… | 65 | 2649 | active |
| thepirat000/Audit.NET Audit.NET is an extensible .NET framework for generating audit logs of executing operations, capturing environmental data like user ID, mac… | 76 | 2645 | active |
| devopshydclub/vprofile-project A Java Spring MVC web application (vProfile) used as a sample multi-tier project for DevOps training by DevOps Shack. It serves as a practi… | 35 | 2645 | active |
| vercel/micro Micro is a minimal asynchronous HTTP framework for building microservices in Node.js using async/await. It provides a tiny, dependency-ligh… | 60 | 10625 | maintenance |
| paypal/junodb JunoDB is PayPal's open-source secure, consistent, and highly available distributed key-value store delivering single-digit millisecond lat… | 30 | 2636 | active |
| Netflix/falcor Falcor is a JavaScript library that lets you represent all remote data sources as a single virtual JSON graph model, fetching data efficien… | 50 | 10569 | maintenance |
| medplum/medplum Medplum is an open-source developer platform for building compliant healthcare applications, providing a FHIR-native clinical data reposito… | 95 | 2630 | active |
| brandonhilkert/sucker_punch Sucker Punch is a single-process asynchronous background job processing library for Ruby, built on concurrent-ruby. Jobs are stored in memo… | 58 | 2630 | stable |
| Sonatype Nexus Repository Sonatype Nexus Repository is a binary repository manager that serves as the single source of truth for internal and third-party build artif… | 99 | 2628 | stable |
| altmann/FluentResults FluentResults is a lightweight .NET library implementing the Result pattern, returning success/failure objects instead of throwing exceptio… | 37 | 2627 | active |
| http4s/http4s Http4s is a minimal, idiomatic Scala library for building HTTP servers and clients, serving as Scala's equivalent to Rack, WSGI, WAI, and S… | 93 | 2626 | stable |
| cloudwego/volo Volo is a high-performance, strongly extensible RPC framework written in Rust for building microservices. It provides Thrift, gRPC, and HTT… | 88 | 2619 | active |
| spatie/laravel-sitemap A Laravel package by Spatie that generates XML sitemaps, either by crawling an entire site automatically or by adding URLs manually (includ… | 95 | 2617 | stable |
| instantdb/instant Instant is an open-source backend platform (the 'Modern Firebase') providing a real-time relational database, auth, permissions, storage, p… | 67 | 10493 | maintenance |
| wassim249/fastapi-langgraph-agent-production-ready-template A production-ready FastAPI template for building AI agent backends with LangGraph integration. It provides stateful conversations, long-ter… | 64 | 2614 | active |
| alexedwards/scs SCS is an HTTP session management library for Go that automatically loads and saves session data via middleware. It supports 19 server-side… | 47 | 2613 | stable |
| hayes/pothos Pothos is a plugin-based GraphQL schema builder for TypeScript that uses a strongly typed, code-first approach with no code generation requ… | 95 | 2611 | active |
| symfony/service-contracts A set of PHP interfaces and abstractions extracted from Symfony components, defining contracts for writing services that decouple code from… | 90 | 2611 | stable |
| risesoft-y9/Digital-Infrastructure Digital-Infrastructure (数字底座) is a Java/Spring Boot + Vue 3 rapid development platform for large government and enterprise digital transfor… | 75 | 2608 | active |
| lexik/LexikJWTAuthenticationBundle A Symfony bundle that provides JSON Web Token (JWT) authentication for Symfony APIs. It handles token creation, validation, and integration… | 71 | 2608 | stable |
| openflagr/flagr Flagr is an open-source Go microservice for feature flagging, A/B testing, and dynamic configuration, built around a single evaluation API … | 98 | 2606 | active |
| amberframework/amber Amber is a full-stack web application framework for the Crystal language, inspired by Rails, Phoenix, and Kemal, providing routing, control… | 86 | 2604 | active |
| clj-commons/aleph Aleph is a Clojure library for asynchronous network communication built on Netty, providing an HTTP server and client plus raw TCP and UDP … | 77 | 2590 | active |
| rubyonjets/jets Jets is a Ruby serverless framework and deployment service that packages Rails, Sinatra, Hanami, or any Rack app and runs it on AWS Lambda.… | 55 | 2590 | active |
| symfony/monolog-bridge A Symfony bridge component that integrates the Monolog logging library with various Symfony components. It wires Monolog handlers, processo… | 99 | 2583 | stable |
| mewebstudio/captcha A Laravel service provider package that generates CAPTCHA images for form protection, supporting Laravel 5 through 12. It offers session-ba… | 85 | 2583 | active |
| liukuo362573/YiShaAdmin YiShaAdmin is an open-source admin management system built on .NET Core MVC with a clean Bootstrap/jQuery UI. It provides role-based permis… | 32 | 2580 | active |
| dromara/RuoYi-Vue-Plus RuoYi-Vue-Plus is a multi-tenant Java admin management system that rewrites RuoYi-Vue for distributed cluster scenarios, integrating Sa-Tok… | 94 | 2576 | active |
| FreeRADIUS/freeradius-server FreeRADIUS is a high-performance, highly configurable multi-protocol policy server supporting RADIUS, DHCPv4/v6, DNS, TACACS+, and VMPS, wr… | 87 | 2574 | stable |
| cmgmyr/laravel-messenger A Laravel package that adds a full user-to-user messaging system to Laravel applications, supporting multiple conversations, group threads,… | 67 | 2574 | active |
| firebase/firebase-android-sdk The official Firebase Android SDK, containing the source code for Firebase's Android libraries such as Firestore, Realtime Database, Cloud … | 77 | 2565 | active |
| http-kit/http-kit http-kit is a minimalist, high-performance, event-driven HTTP client and server for Clojure, fully Ring-compatible as a drop-in replacement… | 68 | 2565 | stable |
| eventflow/EventFlow EventFlow is an async/await-first CQRS and event sourcing framework for .NET, built around domain-driven design concepts like aggregates, c… | 80 | 2564 | active |
| ueberdosis/hocuspocus Hocuspocus is a Yjs CRDT-based WebSocket backend for conflict-free real-time collaboration, written in TypeScript. It provides a server, cl… | 98 | 2559 | active |
| go-gorm/gen GORM Gen is a code-generation library built on top of the GORM ORM for Go. It generates type-safe DAO APIs and query DSL code from database… | 95 | 2558 | active |
| sequelize/cli The official command-line interface for the Sequelize ORM, providing commands to initialize projects, generate models, migrations, and seed… | 76 | 2558 | active |
| webserver-llc/angie Angie is a high-performance web server and reverse proxy forked from nginx by former nginx developers, designed as a drop-in replacement re… | 97 | 2549 | active |
| rust-lang/log The `log` crate is a lightweight logging facade for Rust that provides a single logging API abstracting over actual logging implementations… | 95 | 2544 | stable |
| HardySimpson/zlog zlog is a pure C logging library inspired by log4j/logback, offering categories, formats, and rules configured via a file. It is reliable, … | 66 | 2543 | stable |
| laravel/cashier-stripe Laravel Cashier is an official Laravel package providing a fluent interface to Stripe's subscription billing services. It handles subscript… | 97 | 2542 | stable |
| lovoo/goka Goka is a compact yet powerful distributed stream processing library for Apache Kafka written in Go. It extends Kafka consumer groups by bi… | 90 | 2538 | active |
| agronholm/anyio AnyIO is a high-level asynchronous concurrency and networking library for Python that runs on top of either asyncio or Trio. It provides Tr… | 93 | 2537 | stable |
| symfony/serializer The Symfony Serializer component transforms data structures, including object graphs, into array structures or formats like XML and JSON, a… | 95 | 2536 | stable |
| PyMySQL/mysqlclient mysqlclient is a Python DB-API 2.0 compatible driver for MySQL and MariaDB, forked from MySQLdb1 with Python 3 support and bug fixes. It wr… | 84 | 2536 | active |
| ntex-rs/ntex ntex is a Rust framework for building composable asynchronous network services, supporting HTTP and WebSockets. It is runtime-agnostic, let… | 95 | 2533 | active |
| golang/protobuf The legacy Go module providing bindings for Google's protocol buffers, including binary, text, and JSON serialization of protobuf messages.… | 23 | 10085 | maintenance |
| logfellow/logstash-logback-encoder A Java library providing Logback encoders, layouts, and appenders for logging in JSON and other Jackson-supported formats. Originally built… | 69 | 2529 | active |
| andeya/erpc eRPC is an efficient, extensible, and easy-to-use RPC framework written in Go. It provides a unified peer API for servers and clients, mult… | 23 | 2528 | active |
| Agent-Field/agentfield AgentField is an open-source AI backend that lets you build, deploy, and govern AI agents like APIs and scale them like microservices. It p… | 79 | 2527 | active |
| pac4j/pac4j pac4j is a Java security engine for authenticating users, managing profiles, and enforcing authorizations across web applications and servi… | 77 | 2521 | stable |
| qos-ch/slf4j SLF4J is a simple facade/abstraction for various Java logging frameworks such as java.util.logging, logback, log4j 2.x, reload4j, and tinyl… | 82 | 2519 | stable |
| geekidea/spring-boot-plus Spring-Boot-Plus is an open-source Spring Boot scaffolding framework that integrates common backend development components such as MyBatis-… | 37 | 2518 | active |
| liangdas/mqant mqant is a concise, high-performance distributed microservice framework written in Go, originally designed for real-time game servers. It p… | 32 | 2517 | active |
| tidwall/pogocache Pogocache is a fast in-memory caching server written in C with a focus on low latency and CPU efficiency. It speaks Memcache, Redis/Valkey … | 83 | 2515 | active |
| nitrocloudofficial/nitrostack NitroStack is an enterprise-grade TypeScript framework for building production-ready MCP (Model Context Protocol) servers and AI-native app… | 80 | 2515 | active |
| vinkius-labs/laravel-page-speed A Laravel package providing an optimization pipeline of middleware that minifies Blade-rendered HTML and compresses REST API responses for … | 89 | 2512 | active |
| ErikEJ/EFCorePowerTools EF Core Power Tools is a Visual Studio extension and cross-platform CLI (efcpt) for Entity Framework Core that provides GUI-based reverse e… | 69 | 2511 | active |
| Keats/validator A Rust library providing struct validation via a custom derive macro, inspired by marshmallow and Django validators. It offers built-in rul… | 75 | 2509 | stable |
| aspnet-contrib/AspNet.Security.OAuth.Providers A collection of ASP.NET Core authentication middleware providing OAuth 2.0 social login providers such as GitHub, Twitter/X, and Dropbox. I… | 80 | 2508 | active |
| Apipie/apipie-rails Apipie-rails is a DSL and Rails engine for documenting RESTful APIs in Ruby on Rails applications. It lets developers describe API endpoint… | 80 | 2507 | stable |