domain: backend
4128 products, primary matches first, then adoption-weighted; health v2 shown.
| Product | Health v2 | Stars | Maturity |
|---|---|---|---|
| smallnest/rpcx rpcx is a high-performance distributed RPC framework for Go, comparable to Alibaba Dubbo but designed natively for Go without requiring pro… | 77 | 8312 | active |
| alibaba/transmittable-thread-local TransmittableThreadLocal (TTL) is a zero-dependency Java library providing an enhanced InheritableThreadLocal that transmits context values… | 62 | 8293 | stable |
| 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 |
| apache/tomcat Apache Tomcat is an open-source servlet container implementing the Jakarta Servlet, Pages, Expression Language, WebSocket, Annotations, and… | 77 | 8234 | stable |
| heartcombo/simple_form Simple Form is a Ruby gem that provides a flexible DSL for building forms in Rails applications without imposing markup opinions. It wraps … | 72 | 8229 | stable |
| apache/shardingsphere-elasticjob Apache ElasticJob is a distributed scheduled job framework for the JVM that provides flexible scheduling, job sharding, and resource manage… | 76 | 8209 | stable |
| expressjs/morgan Morgan is HTTP request logger middleware for Node.js, commonly used with Express. It supports predefined and custom log formats, configurab… | 83 | 8201 | stable |
| openedx/openedx-platform Open edX Platform is the open-source Learning Management System (LMS) and Studio (CMS) that powers online course delivery and authoring at … | 67 | 8173 | active |
| Orchard CMS Orchard Core is an open-source, modular, multi-tenant application framework built on ASP.NET Core, plus a full-featured content management … | 97 | 8167 | stable |
| allegro/bigcache BigCache is a fast, concurrent, evicting in-memory cache library for Go designed to hold gigabytes of entries without GC overhead by storin… | 87 | 8155 | stable |
| MariaDB/server MariaDB Server is a widely deployed open-source relational database (SQL server) forked from MySQL by its original developers, licensed und… | 99 | 8145 | stable |
| mde/ejs EJS is an embedded JavaScript templating engine for Node.js and browsers that lets you generate HTML with plain JavaScript in `<% %>` tags.… | 90 | 8121 | stable |
| symfony/http-kernel The Symfony HttpKernel component provides a structured, event-driven process for converting an HTTP Request into a Response. It is the core… | 95 | 8106 | stable |
| Inertia.js Inertia.js is a glue framework that lets you build single-page React, Vue, or Svelte apps on top of classic server-side routing and control… | 95 | 8102 | stable |
| omniauth/omniauth OmniAuth is a Ruby library that standardizes multi-provider authentication for web applications via Rack middleware. Developers add authent… | 69 | 8100 | 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 |
| MagicStack/asyncpg asyncpg is a fast PostgreSQL client library for Python built directly on the PostgreSQL binary protocol and designed for asyncio. It expose… | 60 | 8075 | stable |
| google/leveldb LevelDB is a fast embedded key-value storage library from Google providing an ordered mapping from string keys to string values. It is a C+… | 55 | 39365 | maintenance |
| withastro/flue Flue is an open-source TypeScript framework for building autonomous AI agents using a React-like hooks API ('use agent' directive, useModel… | 58 | 8039 | active |
| Serilog Serilog is a diagnostic logging library for .NET applications with first-class support for structured event data. It captures named propert… | 87 | 8032 | stable |
| webiny/webiny-js Webiny is an open-source, self-hosted content platform built as a TypeScript framework that runs on AWS serverless infrastructure (Lambda, … | 98 | 8031 | active |
| cloudwego/kitex Kitex is a high-performance, strongly extensible Go RPC framework for building microservices, developed by ByteDance's CloudWeGo team. It i… | 94 | 8026 | stable |
| expr-lang/expr Expr is a Go-centric expression language and evaluation engine that compiles expressions into bytecode and runs them on a fast, safe virtua… | 81 | 7989 | stable |
| RichardKnop/machinery Machinery is a Go library for asynchronous task and job queues built on distributed message passing. It supports multiple brokers (RabbitMQ… | 59 | 7972 | stable |
| railsadminteam/rails_admin RailsAdmin is a Rails engine that adds an easy-to-use admin interface for managing application data. It provides automatic CRUD, search, fi… | 77 | 7957 | active |
| puma/puma Puma is a fast, multi-threaded and multi-process HTTP 1.1 web server for Ruby/Rack applications, featuring a C-optimized Ragel HTTP parser … | 95 | 7914 | stable |
| elsa-workflows/elsa-core Elsa Workflows is a workflow engine library for .NET that lets applications execute workflows defined in C# code, JSON, or via a visual des… | 99 | 7870 | active |
| PyMySQL/PyMySQL PyMySQL is a pure-Python client library for MySQL and MariaDB, implementing the PEP 249 DB-API 2.0 interface. It requires no compiled exten… | 85 | 7844 | stable |
| dropwizard/metrics Dropwizard Metrics is a Java library for capturing JVM- and application-level metrics such as gauges, counters, histograms, and timers. It … | 88 | 7843 | stable |
| kelektiv/node.bcrypt.js A Node.js library providing bcrypt password hashing implemented as a native C++ addon. It handles salting and hashing passwords for secure … | 57 | 7800 | stable |
| MassTransit/MassTransit MassTransit is a free, open-source distributed application framework for .NET that enables message-based, loosely-coupled asynchronous comm… | 70 | 7798 | active |
| hatchet-dev/hatchet Hatchet is an open-source (MIT) orchestration engine for background tasks, AI agents, and durable workflows, available as a cloud service o… | 89 | 7792 | active |
| PowerJob/PowerJob PowerJob is an open-source enterprise job scheduling and distributed computing framework written in Java. It provides a web console, multip… | 56 | 7783 | active |
| predis/predis Predis is a flexible and feature-complete Redis/Valkey client library written entirely in PHP, requiring no native extension. It supports R… | 98 | 7780 | stable |
| aceld/zinx Zinx is a lightweight concurrent server framework written in Go, focused on TCP long-connection servers such as game backends. It emphasize… | 76 | 7756 | active |
| 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 |
| guzzle/promises A Promises/A+ implementation for PHP that supports promise chaining, synchronous waiting, cancellation, and promise groups. It is the promi… | 99 | 7717 | stable |
| nodejs/undici Undici is a fast HTTP/1.1 client library for Node.js, written from scratch, that also provides WHATWG-compliant fetch, WebSocket, EventSour… | 94 | 7682 | stable |
| MapStruct MapStruct is a Java annotation processor that generates type-safe, high-performance bean mapping code at compile time, supporting beans, re… | 77 | 7682 | stable |
| cordiverse/cordis Cordis is a TypeScript meta-framework for building composable plugin-based applications, centered on a service container (context) with dep… | 76 | 7646 | active |
| uber-go/fx Fx is a dependency injection based application framework for Go, developed and battle-tested at Uber. It manages application lifecycles, el… | 49 | 7645 | stable |
| agronholm/apscheduler APScheduler (Advanced Python Scheduler) is a Python library for scheduling tasks with cron-style, interval, calendar-based, and one-off tri… | 88 | 7615 | active |
| symfony/routing The Symfony Routing component maps HTTP requests to configuration variables, matching incoming URLs against defined routes and generating U… | 99 | 7613 | stable |
| MightyMoud/sidekick Sidekick is a Go CLI tool that turns a bare Ubuntu VPS into a production-ready application hosting platform, similar to fly.io or Heroku bu… | 54 | 7597 | active |
| labring/laf Laf is an open-source cloud development platform (BaaS/FaaS) offering cloud functions, cloud database (MongoDB), and cloud storage (MinIO) … | 66 | 7554 | active |
| ithewei/libhv libhv is a cross-platform C/C++ network library providing an event loop with non-blocking IO and timers, similar to libevent/libuv but with… | 72 | 7539 | 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 |
| ninenines/cowboy Cowboy is a small, fast, modern HTTP server for Erlang/OTP supporting HTTP/1.1, HTTP/2, HTTP/3, Websocket, and REST. It provides a complete… | 77 | 7525 | stable |
| lcobucci/jwt A PHP library for creating, parsing, and validating JSON Web Tokens (JWT) and JSON Web Signatures (JWS) per RFC 7519. It is installed via C… | 83 | 7483 | stable |
| WiseLibs/better-sqlite3 A fast, synchronous SQLite3 driver library for Node.js with full transaction support and a simple API. It outperforms async alternatives li… | 97 | 7455 | stable |
| sparckles/Robyn Robyn is a high-performance async Python web framework with a Rust runtime, offering routing, middleware, WebSockets, templating, authentic… | 96 | 7377 | active |
| abel533/Mapper A MyBatis extension library (tk.mybatis Common Mapper) that provides ready-made generic single-table CRUD methods so developers can avoid w… | 86 | 7359 | 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 |
| anomalyco/openauth OpenAuth is a universal, standards-based OAuth 2.0 auth provider that can be deployed as a standalone service or embedded into existing app… | 38 | 7355 | active |
| cloudwego/hertz Hertz is a high-performance, extensible Go HTTP framework from CloudWeGo (ByteDance) for building microservices. It uses the Netpoll networ… | 94 | 7347 | active |
| mediasoup mediasoup is a powerful WebRTC SFU (Selective Forwarding Unit) implemented as a Node.js module and Rust crate, with a C++ media worker subp… | 95 | 7345 | stable |
| Vincit/objection.js Objection.js is an SQL-friendly ORM for Node.js built on the knex query builder, best described as a relational query builder with powerful… | 72 | 7342 | stable |
| typestack/class-transformer class-transformer is a TypeScript/JavaScript library that transforms plain objects into class instances and back using decorators. It suppo… | 60 | 7339 | stable |
| python-trio/trio Trio is a Python library for async/await-native concurrency and I/O, built around structured concurrency principles. It aims for production… | 94 | 7307 | stable |
| barryvdh/laravel-dompdf A Laravel wrapper around the Dompdf HTML-to-PDF converter, exposing a facade and service provider for rendering Blade views or HTML strings… | 87 | 7285 | stable |
| colyseus/colyseus Colyseus is an authoritative multiplayer game framework for Node.js that provides room-based matchmaking, automatic state synchronization, … | 95 | 7226 | stable |
| trentm/node-bunyan Bunyan is a simple and fast JSON logging library for Node.js services, producing one-line JSON log records with standard fields, serializer… | 32 | 7208 | stable |
| dotnet/reactive The Reactive Extensions for .NET (Rx.NET) is a family of libraries providing composable, declarative event-driven programming via observabl… | 94 | 7189 | active |
| deepstreamIO/deepstream.io deepstream is an open-source realtime server that synchronizes schema-less records, provides publish-subscribe events, and routes RPCs betw… | 96 | 7187 | active |
| amacneil/dbmate Dbmate is a lightweight, framework-agnostic database migration tool distributed as a single standalone binary. It manages timestamp-version… | 99 | 7185 | stable |
| node-formidable/formidable Formidable is a Node.js library for parsing multipart form data, especially file uploads, with fast streaming support. It can write uploads… | 80 | 7178 | active |
| go-co-op/gocron gocron is a Go library for scheduling functions to run at predetermined intervals using a fluent, cron-like API. It provides a scheduler, j… | 97 | 7143 | active |
| dotnetcore/CAP CAP is a .NET library providing a lightweight event bus and a distributed transaction solution based on the Outbox pattern (local message t… | 92 | 7107 | active |
| mongodb/laravel-mongodb The official MongoDB integration for Laravel, extending Eloquent models and the Query Builder to work with MongoDB using the standard Larav… | 98 | 7071 | stable |
| quartznet/quartznet Quartz.NET is a full-featured, open-source enterprise job scheduler for the .NET platform, supporting cron and simple triggers, pluggable j… | 98 | 7068 | stable |
| php-fig/http-message PSR-7 provides a set of common PHP interfaces for representing HTTP messages (requests and responses) as described in RFC 7230/7231, plus U… | 23 | 7033 | stable |
| mrniko/netty-socketio A Java implementation of the Socket.IO server built on the Netty framework, supporting Socket.IO client versions 1.x through 4.x. It provid… | 55 | 7019 | stable |
| AnswerDotAI/fasthtml FastHTML is a Python web framework for building fast, scalable, interactive web applications with minimal code, mapping 1:1 to HTML and HTT… | 86 | 7012 | active |
| authzed/spicedb SpiceDB is an open-source, Google Zanzibar-inspired database for storing, computing, and validating fine-grained authorization data at scal… | 99 | 6990 | stable |
| apache/couchdb Apache CouchDB is an open-source NoSQL document database written in Erlang that stores data as JSON documents and exposes an intuitive HTTP… | 77 | 6942 | stable |
| SpringBlade SpringBlade is an enterprise-grade microservices development platform built on Spring Boot 4, Spring Cloud 2025, and Java 21, with a compan… | 93 | 6931 | active |
| shuttle-hq/shuttle Shuttle is a Rust-native cloud development platform and framework that lets developers build and deploy backends without writing infrastruc… | 10 | 6926 | active |
| sysown/proxysql ProxySQL is a high-performance, protocol-aware SQL proxy for MySQL, MariaDB, Percona Server, and PostgreSQL that sits between applications … | 94 | 6904 | stable |
| hyperf/hyperf Hyperf is a high-performance PHP coroutine framework built on Swoole and Swow, designed for building microservices, middleware, web systems… | 98 | 6892 | active |
| pallets/werkzeug Werkzeug is a comprehensive WSGI utility library for Python web applications, providing request/response objects, URL routing, HTTP utiliti… | 91 | 6877 | stable |
| tokio-rs/tracing tracing is a Rust framework for instrumenting applications to emit structured, event-based diagnostic data, built around spans with duratio… | 86 | 6856 | stable |
| open-multi-agent/open-multi-agent Open Multi-Agent (OMA) is an MIT-licensed TypeScript framework for multi-agent AI orchestration that runs inside Node.js backends. A coordi… | 81 | 6831 | active |
| phoenixframework/phoenix_live_view Phoenix LiveView is an Elixir library for building rich, real-time web user interfaces with server-rendered HTML over WebSockets. It sends … | 99 | 6825 | stable |
| django-extensions/django-extensions A collection of custom management command extensions for the Django framework, installable via pip and enabled through INSTALLED_APPS. It a… | 71 | 6813 | active |
| apache/openwhisk Apache OpenWhisk is an open source distributed serverless (FaaS) cloud platform that executes functions in response to events at any scale … | 67 | 6794 | active |
| luraproject/lura Lura is an open-source Go framework for building ultra-performant API Gateways and proxies, formerly known as the KrakenD framework. It agg… | 83 | 6792 | stable |
| jOOQ/jOOQ jOOQ is a Java library that models SQL as a type-safe internal DSL, with a source code generator that reverse-engineers your database schem… | 94 | 6777 | stable |
| go-grpc-middleware A Go library of gRPC middleware (interceptors) providing chained, ready-to-use implementations for auth, logging, tracing, metrics, retries… | 79 | 6762 | active |
| bkeepers/dotenv A Ruby gem that loads environment variables from a `.env` file into `ENV` at application bootstrap, primarily for development and test envi… | 76 | 6762 | stable |
| quartz-scheduler/quartz Quartz is a richly featured, open-source job scheduling library for Java applications, supporting simple to complex schedules for thousands… | 85 | 6749 | stable |
| fullstackhero/dotnet-starter-kit A production-grade .NET 10 starter kit template combining a modular-monolith Web API (vertical slice architecture) with two React 19 front-… | 83 | 6734 | active |
| vercel/platforms A production-ready Next.js multi-tenant application template from Vercel that demonstrates subdomain-based tenancy with custom routing, Red… | 73 | 6706 | active |
| redis/hiredis Hiredis is a minimalistic C client library for Redis, supporting the binary-safe RESP protocol for Redis >= 1.2. It provides synchronous, a… | 98 | 6679 | stable |
| pig-mesh/pig Pig is an enterprise-grade RBAC rapid development platform built on Spring Cloud, Spring Boot 4, and OAuth2 (Spring Authorization Server), … | 86 | 6675 | active |
| firebase/firebase-ios-sdk The official Firebase SDK for Apple platforms (iOS, macOS, tvOS, watchOS, visionOS), providing open-source client libraries for Firebase pr… | 99 | 6660 | stable |
| 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 |
| markbates/goth Goth is a Go library providing a simple, idiomatic way to add multi-provider authentication to web applications via OAuth, OAuth2, and Open… | 57 | 6597 | active |
| arrow-kt/arrow Arrow is a Kotlin library for typed functional programming, providing data types like Option and Either, typed error handling with the Rais… | 91 | 6580 | active |
| NLog/NLog NLog is a free, flexible logging platform for .NET supporting structured and traditional logging with rich routing to multiple targets. It … | 95 | 6546 | stable |
| thedevdojo/wave Wave is an open-source SaaS starter kit and framework built on Laravel, Livewire, and Tailwind CSS. It ships with authentication, billing a… | 86 | 6544 | active |