GenHTTP Webserver
Lightweight C# webserver with excellent developer experience
GenHTTP Webserver launched on December 7, 2024 with 10 votes, #1,989 of 5,365 launches that month and more than 50% of that year's launches. The site was still online in September 2026, 1 year on.
What it does
Lightweight REST API server framework written in C# with support for current standards such as Open API, JWT auth, Websockets and more.
Lightweight, embeddable HTTP web server written in C# with support for current standards such as Open API, JWT auth, Websockets and more.
A configuration-free, embeddable alternative to ASP.NET Core for building REST APIs on .NET. GenHTTP is designed for rapid web service development in .NET, supporting IDEs like Visual Studio, VS Code or Rider. Written in C# and provided as a .NET library package on NuGet, with just a few dependencies. Spin up a local server with a single line of code. Provides a simple, yet powerful, fully object-oriented module system. Supports widely used standards such as Open API, WebSockets, Server Sent Events, or JWT authentication. Embed the tiny engine into your existing dotnet application (e.g. Windows Forms, WPF, MAUI, WinUI, UWP, Uno, Avalonia or console) or host it via Docker. No configuration…from genhttp.org
Does a similar job
all alternatives →
I built a web framework in C2025 · github.com · ▲420a lightweight web framework in c. Contribute to ashtonjamesd/lavandula development by creating an account on GitHub.
OpenAPI DevTools – Chrome extension that generates an API spec2023 · github.com · ▲811Effortlessly discover API behaviour with a Chrome extension that automatically generates OpenAPI specifications in real time for any app or website.
- UTunsafehttp – tiny web server from scratch in C, running on an orange pi2025 · unsafehttp.benren.au · ▲87
Hey HN, I wanted to get more familiar with C programming, *nix socket programming and C compilation, so I wrote this "web" ""server"". It's running on a tiny SBC in my office, and there's as little as possible between you and it. Happy for you to try and break it, hopefully with something more interesting than a DoS though :) Please let me know if you find any issues.
My embeddable C/C++ webserver2011 · github.com · ▲84
Insomnia REST Client now open-source2017 · insomnia.rest · ▲218Leading Open Source API Development Platform for HTTP, REST, GraphQL, gRPC, SOAP, and WebSockets
Javalin, a Java/Kotlin REST API Framework2017 · javalin.io · ▲50Javalin - A lightweight Java and Kotlin web framework. Create REST APIs in Java or Kotlin easily.
More dev tools this month
the category →

open-source IDE for thoughtful software design. Contribute to devdotfast/whiteboard development by creating an account on GitHub.
Dev tools · 27d ago · github.com

Contribute to reladraw/reladraw development by creating an account on GitHub.
Dev tools · 25d ago · github.com
OpenBot▲362Grok Bot alternative: free, local, open-source, multiplayer
Dev tools · 22d ago · openbot.run
Talanoa▲343Hi HN, I’m a fullstack developer, and honestly, I’ve lost count of how many side projects I’ve worked on over the years. But one idea kept coming back to me: a different kind of email client. It first came to me in 2014: “What if we could handle emails more like conversations?” Every year, I’d revisit this concept in my “Build Notes.” Ten years later, no one had built exactly what I had in mind — so I finally decided to do it myself. That’s how Talanoa was born. I wanted something focused on people, not timelines. I was tired of marking messages as unread just to remember to reply later, or…
Dev tools · 20d ago · talanoa.email
CoreSpeed▲332One MCP for everything your agents need: apps, memory, tools
Dev tools · 28d ago · corespeed.io
Source: Product Hunt launch ↗