Best Open Source server Libraries
A curated list of the most popular GitHub repositories tagged with server. Select any project to visualize its architecture and dive into the codebase using Codyn's AI engine.
#1gin-gonic/gin
Gin is a high-performance HTTP web framework written in Go. It provides a Martini-like API but with significantly better performance—up to 40 times faster—thanks to httprouter. Gin is designed for building REST APIs, web applications, and microservices.
#2expressjs/express
Fast, unopinionated, minimalist web framework for node.
#3withastro/astro
The web framework for content-driven websites. ⭐️ Star to support our work!
#4coollabsio/coolify
An open-source, self-hostable PaaS alternative to Vercel, Heroku & Netlify that lets you easily deploy static sites, databases, full-stack applications and 280+ one-click services on your own servers.
#5PostgREST/postgrest
REST API for any Postgres database
#6vapor/vapor
💧 A server-side Swift HTTP web framework.
#7imthenachoman/How-To-Secure-A-Linux-Server
An evolving how-to guide for securing a Linux server.
#8elysiajs/elysia
Ergonomic Framework for Humans
#9ory/hydra
Internet-scale OpenID Certified™ OpenID Connect and OAuth2.1 provider that integrates with your user management through headless APIs. Solve OIDC/OAuth2 user cases over night. Consume as a service on Ory Network or self-host. Trusted by OpenAI and many others for scale and security. Written in Go.
#10Grasscutters/Grasscutter
A server software reimplementation for a certain anime game.
#11gofr-dev/gofr
An opinionated GoLang framework for accelerated microservice development. Built in support for databases and observability.
#12googleapis/mcp-toolbox
MCP Toolbox for Databases is an open source MCP server for databases.
#13OpenRCT2/OpenRCT2
An open source re-implementation of RollerCoaster Tycoon 2 🎢
#14mail-in-a-box/mailinabox
Mail-in-a-Box helps individuals take back control of their email by defining a one-click, easy-to-deploy SMTP+everything else server: a mail server in a box.
#15Pumpkin-MC/Pumpkin
Empowering everyone to host fast and efficient Minecraft servers.
#16google/go-cloud
The Go Cloud Development Kit (Go CDK): A library and tools for open cloud development in Go.
#17egametang/ET
Unity3D Client And C# Server Framework
#18linuxserver/Heimdall
An Application dashboard and launcher
#19lollipopkit/flutter_server_box
ServerBox - server status & toolbox
#20apache/hertzbeat
An AI-powered next-generation open source real-time observability system.
#21GameServerManagers/LinuxGSM
The command-line tool for quick, simple deployment and management of Linux dedicated game servers.
#22boostorg/beast
HTTP and WebSocket built on Boost.Asio in C++11
#23open62541/open62541
Open source implementation of OPC UA (OPC Unified Architecture) aka IEC 62541 licensed under Mozilla Public License v2.0
#24ontola/atomic-server
An open source headless CMS / real-time database. Powerful table editor, full-text search, and SDKs for JS / React / Svelte.
#25continuwuity/continuwuity
[Mirror] Continuwuity, the official community driven continuation of conduwuit & Conduit, focusing on user experience and new features.
#26ziex-dev/ziex
Full-stack web framework for Zig. HTML syntax within Zig code, just like JSX but for Zig!
#27Pokymon/foo.ng
Free subdomains for everyone.