domain: backend
4128 products, primary matches first, then adoption-weighted; health v2 shown.
| Product | Health v2 | Stars | Maturity |
|---|---|---|---|
| baidu/braft braft is an industrial-grade C++ implementation of the RAFT consensus algorithm and replicated state machine, built on top of brpc. It is d… | 23 | 4229 | stable |
| oauthjs/node-oauth2-server A Node.js module for implementing a fully RFC 6749/6750 compliant OAuth2 server/provider, framework-agnostic with official wrappers for Exp… | 23 | 4066 | active |
| octelium/octelium Octelium is a free, open-source, self-hosted unified zero trust secure access platform built on Kubernetes. It can operate as a remote acce… | 86 | 4034 | active |
| koxudaxi/datamodel-code-generator A Python CLI tool that generates type-safe Python data models (Pydantic v2, dataclasses, TypedDict, msgspec.Struct) from schema definitions… | 96 | 4007 | active |
| badrisnarayanan/antigravity-claude-proxy A Node.js proxy server that exposes Antigravity's Cloud Code Claude and Gemini models behind an Anthropic-compatible Messages API. It trans… | 73 | 3941 | active |
| Lightning-AI/LitServe LitServe is a Python framework for building custom AI inference servers with full control over batching, routing, streaming, and scaling lo… | 93 | 3935 | active |
| MiniProfiler/rack-mini-profiler Rack middleware that displays a speed badge on every HTML page with detailed performance profiling for Ruby web apps. It provides database … | 74 | 3905 | active |
| ballerina-platform/ballerina-lang Ballerina is an open-source, cloud-native programming language optimized for integration, developed by WSO2, with built-in support for JSON… | 100 | 3849 | active |
| panva/node-oidc-provider A Node.js library implementing an OpenID Certified OAuth 2.0 Authorization Server with full OpenID Connect support. It is highly configurab… | 100 | 3803 | active |
| wp-graphql/wp-graphql WPGraphQL is a free, open-source WordPress plugin that exposes an extendable GraphQL schema and API for any WordPress site. It lets develop… | 96 | 3791 | active |
| deanxv/coze-discord-proxy A self-hosted Go service that proxies conversations to a Coze-Bot on Discord, exposing OpenAI-compatible API endpoints (v1/chat/completions… | 58 | 3786 | stable |
| aws/aws-sdk-go-v2 The official AWS SDK version 2 for the Go programming language, providing clients and utilities for all AWS services such as S3, EC2, and D… | 96 | 3642 | stable |
| mitchellh/libxev libxev is a cross-platform, high-performance event loop library written in Zig that provides a unified proactor-style API for non-blocking … | 73 | 3580 | stable |
| ding113/claude-code-hub CC Hub is a self-hosted AI API proxy and gateway service for Claude Code, Codex, and other OpenAI/Claude-compatible APIs, built with Next.j… | 84 | 3345 | active |
| awslabs/aws-sdk-rust The official AWS SDK for Rust, providing one generated crate per AWS service plus a shared aws-config crate for credential and region loadi… | 96 | 3337 | stable |
| espocrm/espocrm EspoCRM is a free, open-source CRM web application with a PHP REST API backend and a single-page application frontend. It manages leads, co… | 100 | 3321 | stable |
| gongfuxiang/shopxo ShopXO is a free, MIT-licensed enterprise-grade B2C e-commerce system built on ThinkPHP8 (PHP). It supports PC, H5, mini-programs (WeChat, … | 75 | 3307 | active |
| vouch/vouch-proxy Vouch Proxy is an SSO and OAuth/OIDC authentication proxy for Nginx that uses the auth_request module to protect upstream sites. It support… | 73 | 3283 | active |
| adelsz/pgtyped PgTyped is a TypeScript library that generates static types for raw SQL queries against a running PostgreSQL database. It parses queries fr… | 75 | 3276 | active |
| googleapis/google-cloud-node The official Google Cloud Client Library for Node.js, a monorepo containing idiomatic npm client libraries for interacting with individual … | 96 | 3197 | stable |
| dosco/graphjin GraphJin is a Go compiler and runtime that turns GraphQL queries into optimized, policy-checked SQL across many databases, files, and APIs,… | 95 | 3158 | active |
| fable-compiler/Fable Fable is an open-source F# compiler that translates F# code to JavaScript, TypeScript, Python, Rust, Dart, and Erlang/BEAM. It makes F# a f… | 100 | 3149 | active |
| graphprotocol/graph-node Graph Node is the core indexing component of The Graph protocol, written in Rust. It extracts and organizes data from blockchains such as E… | 93 | 3145 | active |
| aspen-cloud/triplit Triplit is an open-source full-stack syncing database that runs on both server and client, syncing data in real time over websockets with c… | 54 | 3111 | active |
| SciSharp/BotSharp BotSharp is an open-source multi-agent AI framework written in C# for .NET, providing an agent abstraction layer, conversation state manage… | 79 | 3099 | active |
| TanStack/ai TanStack AI is a type-safe, provider-agnostic TypeScript SDK for building AI applications with streaming chat, tool calling, agents, struct… | 80 | 3060 | active |
| Tai7sy/card-system A self-hosted PHP-based online card-key (卡密) shop system for selling digital goods and license codes. It integrates with a wide range of pa… | 65 | 3022 | active |
| alibaba/pont Pont (French for 'bridge') is a data service layer solution that converts API documentation platforms like Swagger into metadata, then gene… | 23 | 3019 | active |
| MiniProfiler/dotnet MiniProfiler is a lightweight profiling library and UI for .NET, ASP.NET, and ASP.NET Core applications. It shows where time is spent in re… | 49 | 3007 | stable |
| twitter/twemproxy Twemproxy (nutcracker) is a fast, lightweight proxy for the memcached and Redis protocols, written in C. It reduces backend connection coun… | 23 | 12337 | maintenance |
| undb-io/undb undb is a private-first, self-hosted no-code database platform that also functions as a Backend as a Service (BaaS). Built on SQLite with a… | 43 | 2976 | active |
| dwgx/WindsurfAPI A zero-dependency Node.js reverse proxy that exposes Windsurf/Devin Desktop's 100+ cloud AI models (Claude, GPT, Gemini, DeepSeek, Kimi, GL… | 78 | 2965 | active |
| nicolasff/webdis Webdis is a lightweight HTTP server written in C that exposes Redis commands over HTTP with JSON output. It supports JSONP, chunked pub/sub… | 69 | 2964 | active |
| michaelfeil/infinity Infinity is a high-throughput, low-latency serving engine that exposes text-embedding, reranking, CLIP, CLAP and ColPali models via an Open… | 63 | 2933 | active |
| typegoose/mongodb-memory-server A Node.js library that programmatically downloads and spins up real MongoDB server binaries for testing, holding data in memory with zero o… | 95 | 2844 | active |
| glauth/glauth GLAuth is a lightweight, secure LDAP authentication server written in Go with configurable backends. It serves as a simple alternative to O… | 93 | 2844 | active |
| gcanti/fp-ts fp-ts is a library for typed functional programming in TypeScript, providing popular data types (Option, Either, IO, Task), type classes (F… | 57 | 11545 | maintenance |
| maxpert/marmot Marmot is a leaderless, distributed SQLite replication system built on a gossip-based protocol with distributed transactions and eventual c… | 88 | 2820 | active |
| teaql/teaql-agent-kit TeaQL Agent Kit is a model-mediated harness for coding agents that inserts an inspectable, executable domain model (KSML) between requireme… | 87 | 2803 | active |
| openstack/swift OpenStack Swift is a distributed object storage system that scales from a single machine to thousands of servers, optimized for multi-tenan… | 77 | 2798 | stable |
| JPressProjects/jpress JPress is an open-source, WordPress-like content management system written in Java, used to power 100,000+ websites including government ag… | 23 | 2734 | stable |
| unjs/unbuild unbuild is a unified JavaScript/TypeScript build system from the unjs ecosystem, built on Rollup, that bundles libraries into CommonJS and … | 80 | 2727 | active |
| MetapriseAI/OrgKernel OrgKernel is an open-source trust layer for AI agents providing cryptographic agent identity (Ed25519), scoped execution tokens, SHA-256 ha… | 55 | 2700 | active |
| unjs/unstorage Unstorage is an async key-value storage library for JavaScript with a unified API across 30+ built-in drivers (memory, filesystem, browser,… | 91 | 2639 | stable |
| architect/architect Architect is an open-source framework and CLI for building Functional Web Apps (FWAs) on AWS serverless infrastructure using concise declar… | 67 | 2622 | active |
| ory/fosite Fosite is a security-first, extensible OAuth 2.0 and OpenID Connect SDK for Go, implementing RFC 6749, RFC 6819, PKCE, and OpenID Connect C… | 57 | 2614 | active |
| stephenh/ts-proto ts-proto is a protoc plugin that generates idiomatic, strongly-typed TypeScript code from protobuf schema files, including encode/decode me… | 98 | 2591 | active |
| bestruirui/octopus Octopus is a self-hosted LLM API aggregation gateway that unifies multiple provider channels behind a single endpoint, converting between O… | 79 | 2585 | active |
| lealone/Lealone Lealone is a Java-based full-stack, self-evolving general-purpose AI agent built on top of a high-performance NewSQL/RDBMS engine with asyn… | 67 | 2582 | active |
| ajinabraham/nodejsscan nodejsscan is a static application security testing (SAST) scanner for Node.js applications, built on libsast and semgrep. It provides a we… | 43 | 2574 | active |
| Azure/azure-sdk-for-java The official Azure SDK for Java, providing client and management libraries for consuming and administering Azure services. It follows the A… | 96 | 2566 | active |
| sqlpage/SQLPage SQLPage is an open-source web application framework, written in Rust, that turns SQL queries in .sql files into interactive data-driven web… | 100 | 2553 | active |
| Wire Wire is an open-source, end-to-end encrypted messaging and collaboration platform whose server components are written primarily in Haskell.… | 59 | 2546 | active |
| Squidex/squidex Squidex is an open-source (MIT) headless CMS and content management hub built with ASP.NET Core and CQRS, exposing content and assets throu… | 88 | 2507 | active |
| paascloud/paascloud-master A full-stack Spring Cloud + Vue microservices reference project simulating an e-commerce mall with a complete shopping flow and back-office… | 32 | 9860 | maintenance |
| saloonphp/saloon Saloon is a PHP library for rapidly building third-party API integrations and SDKs using Connector and Request classes. It is framework-agn… | 79 | 2438 | active |
| nz-m/SocialEcho SocialEcho is a full-featured social networking platform built on the MERN stack (MongoDB, Express.js, React.js, Node.js) with automated co… | 31 | 2435 | active |
| Xudong-Huang/may May is a high-performance Rust library for stackful coroutines, offering a Goroutine-like programming model for building massively concurre… | 75 | 2425 | active |
| prism-php/prism Prism is a Laravel package providing a unified, fluent interface for working with Large Language Models across providers like OpenAI, Anthr… | 68 | 2422 | active |
| tobi/walgit Walgit is a self-hosted Git server implemented as a single Rust binary that uses S3- or GCS-compatible object storage as the source of trut… | 57 | 2413 | active |
| Mycat MyCAT is an open-source database middleware written in Java that acts as a distributed MySQL cluster proxy, providing sharding, read/write … | 60 | 9516 | maintenance |
| openzipkin/brave Brave is a dependency-free Java distributed tracing library that instruments production services to gather timing data, propagate trace con… | 75 | 2406 | stable |
| hapifhir/hapi-fhir HAPI FHIR is a complete open-source Java implementation of the HL7 FHIR standard for healthcare data interoperability, providing APIs for b… | 100 | 2396 | stable |
| liriliri/licia Licia is a zero-dependency JavaScript utility library containing over 400 micro modules for everyday tasks like DOM manipulation, cookies, … | 97 | 2382 | active |
| nelmio/NelmioApiDocBundle A Symfony bundle that generates OpenAPI/Swagger documentation for REST APIs from PHP 8 attributes and code analysis. It exposes interactive… | 96 | 2366 | active |
| youlaitech/youlai-mall youlai-mall is an open-source full-stack e-commerce mall system built with Spring Boot 3, Spring Cloud & Alibaba 2022, Spring Authorization… | 42 | 2365 | active |
| smithy-lang/smithy Smithy is a protocol-agnostic interface definition language (IDL) and a set of tools for modeling services as collections of resources, ope… | 99 | 2352 | stable |
| gotd/td gotd/td is a full MTProto 2.0 Telegram API client library written in pure Go, supporting both user accounts and bots with generated binding… | 92 | 2331 | stable |
| Bottelet/DaybydayCRM DaybydayCRM is an open-source, self-hosted customer relationship management system built with Laravel. It helps users track customers, task… | 67 | 2323 | active |
| Azure/azure-sdk-for-js The official Azure SDK for JavaScript and TypeScript, providing client libraries for consuming Azure services and management libraries for … | 96 | 2295 | active |
| yeojz/otplib otplib is a TypeScript-first library for generating and verifying one-time passwords (HOTP and TOTP) for two-factor authentication, compati… | 99 | 2289 | active |
| YXJ2018/SpringBoot-Vue-OnlineExam An online examination system built with a decoupled SpringBoot backend and Vue + Element-UI frontend. It supports exam-taking, practice mod… | 39 | 2271 | active |
| liferay/liferay-portal Liferay DXP (formerly Liferay Portal) is a Java-based digital experience platform combining a CMS, DAM, portals, commerce, search, personal… | 75 | 2264 | active |
| pay-rails/pay Pay is a payments engine (Rails engine gem) for Ruby on Rails 6.0+ that standardizes integration with payment processors like Stripe, Brain… | 97 | 2252 | active |
| Hasnayeen/invobook InvoBook is a self-hosted web application for time tracking, invoice generation, and project and client management, built on the Laravel fr… | 55 | 2237 | active |
| learnhouse/learnhouse LearnHouse is a next-generation open-source learning management system (LMS) for creating, sharing, and selling educational content. It com… | 99 | 2234 | active |
| postalsys/emailengine EmailEngine is a self-hosted, source-available (not open-source) headless email client that exposes IMAP, SMTP, Gmail API, and Microsoft Gr… | 95 | 2222 | active |
| AmoyLab/Unla Unla is a lightweight, configuration-driven MCP gateway written in Go that converts existing MCP servers and REST APIs into MCP-compliant e… | 85 | 2220 | active |
| zeroc-ice/ice Ice (Internet Communications Engine) is a complete RPC framework for building networked applications, using the Slice IDL to generate clien… | 91 | 2191 | stable |
| phoenixframework/phoenix_live_dashboard A real-time performance monitoring and debugging dashboard for Phoenix applications, built on LiveView. It visualizes telemetry metrics, re… | 67 | 2170 | active |
| dotnetcore/WebApiClient WebApiClient is a declarative REST API client library for .NET where developers define HTTP clients by declaring C# interfaces. It supports… | 82 | 2137 | active |
| ogen-go/ogen ogen is an OpenAPI v3 code generator for Go that produces statically typed client and server code from an OpenAPI specification. It generat… | 98 | 2135 | stable |
| ModelEngine-Group/fit-framework FIT is an enterprise-grade AI development framework for the Java ecosystem, combining a polyglot function engine (Java/Python/C++), a strea… | 66 | 2116 | active |
| anthropics/anthropic-sdk-typescript The official TypeScript/JavaScript SDK for accessing Anthropic's Claude language model APIs from server-side applications. It provides a ty… | 94 | 2106 | active |
| ZongXR/SuperMarket A full-featured online shopping mall system built with Java and SpringCloud microservices, including frontend, backend, MySQL, Redis cachin… | 23 | 2106 | active |
| googleapis/google-cloud-java The official Google Cloud Client Library for Java, providing idiomatic Java clients for Google Cloud Platform services such as BigQuery, Cl… | 99 | 2093 | stable |
| nateware/redis-objects A Ruby gem that maps Redis data types (counters, lists, sets, sorted sets, hashes, locks) directly onto Ruby objects via a simple include, … | 60 | 2092 | active |
| jarcoal/httpmock httpmock is a Go library for easily mocking HTTP responses from external resources in tests. It lets you register responders for exact URLs… | 86 | 2077 | stable |
| saltcorn/saltcorn Saltcorn is a free, open-source, extensible no-code database application builder for creating web and mobile apps with tables, views, layou… | 77 | 2066 | active |
| james-6-23/codex2api Codex2API is a self-hosted Go/Gin reverse proxy with an embedded React admin dashboard that turns a pool of Codex accounts into an OpenAI- … | 78 | 2017 | active |
| microsoft/WebTemplateStudio Microsoft Web Template Studio is a Visual Studio Code extension that scaffolds new web or React Native applications through a wizard-based … | 23 | 2016 | active |
| dynamodb-toolbox/dynamodb-toolbox DynamoDB-Toolbox is a lightweight, type-safe query builder and abstraction layer over the AWS DynamoDB Document Client for TypeScript. It p… | 95 | 2001 | active |
| thx/rap2-delos RAP2-Delos is the backend API server of RAP2, an open-source interface management tool by Alibaba's THX team, built with Koa, MySQL, and Re… | 41 | 7623 | maintenance |
| apple/swift-openapi-generator A Swift package plugin that generates type-safe Swift client and server code from OpenAPI 3.x documents at build time. Generated code is de… | 97 | 1965 | active |
| dotnet/dotNext DotNext is a family of .NET libraries extending the standard API with high-performance, low-allocation primitives such as async locks, unma… | 77 | 1957 | active |
| getml/reflect-cpp reflect-cpp is a C++20/C++26 library for fast serialization, deserialization, and validation using reflection, comparable to pydantic or se… | 85 | 1933 | active |
| Payum/Payum Payum is a MIT-licensed PHP payment processing library that unifies 50+ payment gateways (Stripe, PayPal, Klarna, Authorize.Net, Sofort, an… | 75 | 1924 | stable |
| FJ-OMS/oms-erp An open-source omni-channel business middleware (zhongtai) system for new retail, combining an order management system (OMS/e-commerce ERP)… | 49 | 1924 | active |
| yomorun/yomo YoMo is an open-source serverless LLM function calling framework for building fast, geo-distributed AI agents, written in Rust with a QUIC-… | 99 | 1922 | active |
| Thecosy/IceCMS IceCMS is an open-source, self-hosted content management system built with a decoupled Spring Boot backend and Vue/Nuxt3 frontends, plus a … | 51 | 1921 | active |