Top SERVER GitHub Repositories & Tools (2026)

Yet another WebUI for Nginx

Apache Thrift

Scalable real-time messaging server in a language-agnostic way. Self-hosted alternative to Pubnub, Pusher, Ably, socket.io, Phoenix.PubSub, SignalR. Set up once and forever.

MCP Toolbox for Databases is an open source MCP server for databases.

Open source MCP Servers for AWS

Doctrine Database Abstraction Layer

The Open Source Firebase Alternative with GraphQL.

Complete Open Source and Modular solution for MMO

Event-driven network application framework for high performance protocol servers & clients, non-blocking.

Fastest enterprise AI gateway (50x faster than LiteLLM) with adaptive load balancer, cluster mode, guardrails, 1000+ models support & <100 µs overhead at 5k RPS.

A Ruby/Rack web server built for parallelism

A rewrite of Tachiyomi for the Desktop

A sandbox for the third-party APIs you depend on. Built from the provider's spec, it fails on purpose, and it replays the exact failure production hit.

:electron: Build cross platform desktop apps with ASP.NET Core (Razor Pages, MVC, Blazor).

🔥 Official Firecrawl MCP Server - Adds powerful web scraping and search to Cursor, Claude and any other LLM clients.

GoCD - Continuous Delivery server main repository

An AI-powered next-generation open source real-time observability system.

A tool for mocking HTTP services

Cutting Edge WebRTC Video Conferencing

Seamless multi-primary syncing database with an intuitive HTTP/JSON API, designed for reliability