Top 15 H2O Alternative and Similar Softwares | May 2024

An optimized HTTP server / library implementation that can be used either as a standalone server or a library. Supported Protocols:
HTTP/1.0 (http and https)
HTTP/1.1 (http and https)
Websocket (RFC6455, both ws and wss)
HTTP/2.0 (draft 14, via Upgrade, NPN, ALP

1. Higgs.IO

Higgs.IO A high performance (Async), message oriented network library built for real time systems. It provides a core extensible framework and libraries built on top of the core. Libraries include WebSocket server, HTTP Server and Client and Boson a custom serialization and RMI library.......

2. SignalR

SignalR ASP.NET SignalR is a new library for ASP.NET developers that makes it incredibly simple to add real-time web functionality to your applications. What is "real-time web" functionality? It's the ability to have your server-side code push content to the connected clients as it happens, in real-time.......

3. Pagekite

Pagekite Bring your localhost servers on-line.PageKite is software that gives your localhost servers names and makes them globally visible. It works with any computer and any Internet connection.It's so easy you'll never want to think about routers, IP addresses or other technicalities again. It's open source, too!......

4. mongrel2

mongrel2 Mongrel2 is an application, language, and network architecture agnostic web server that focuses on web applications using modern browser technologies.......

5. h5ai

h5ai h5ai · a modern HTTP web server index for Apache httpd, lighttpd, nginx and Cherokee. FeaturesThere are lots of optional extensions and configuration options to customize the web appearance of your directory listings. All markup is valid HTML5 spiced up with CSS3 and finest JavaScript to build a fresh but......

6. GoAhead

GoAhead Embedthis GoAhead™ is one of the world’s most popular embedded web server deployed for over 15 years in hundreds of millions of devices by industry leaders and startups. It is compact and requires less than 150K RAM. GoAhead uses an event-driven, non-blocking core to efficiently operate with minimal resources. Coupled......

7. Abyss Webserver

Abyss Webserver Abyss Web Server is a compact web server available for Windows, Mac OS X, Linux, and FreeBSD operating systems.Despite its small footprint, it supports HTTP/1.1, secure SSL/TLS connections (HTTPS), on-the-fly HTTP compression, dynamic content generation through CGI/FastCGI scripts, ISAPI extensions, native ASP.NET support, eXtended Side Includes (XSSI), custom error pages,......

8. Simple HTTP Server

Simple HTTP Server Need to share some files with your colleagues or setup basic html website on your machine? It's very simple with Simple HTTP Server. Just click 'Start server' and choose a folder to share. The url already in your clipboard.......

9. Thin

Thin Thin is a Ruby web server that glues together 3 of the best Ruby libraries in web history: * the Mongrel parser, the root of Mongrel speed and security * Event Machine, a network I/O library with extremely high scalability, performance and stability * Rack, a minimal interface between webservers......

10. mongrel

mongrel A small fast HTTP library and server that runs Rails, Camping, Nitro and Iowa apps.......

11. WEBrick

WEBrick WEBrick is a Ruby library providing simple HTTP web server services.......

12. nanoweb

nanoweb Nanoweb is an HTTP server written in PHP, designed to be small, secure, and extensible.......

13. weborf

weborf Weborf is a lightweight webserver designed to rapidly share directories. Runs on POSIX systems.......

14. OpenLiteSpeed

OpenLiteSpeed OpenLiteSpeed is a high-performance, lightweight, open source HTTP server developed and copyrighted by LiteSpeed Technologies. Users are free to download, use, distribute, and modify OpenLiteSpeed and its source code in accordance with the precepts of the GPLv3 license.Why Use OpenLiteSpeed?High performance, event-driven architectureSuper light-weight, minimal CPU and memory footprintApache-compatible rewrite......

15. Rwasa

Rwasa Rwasa is a full-featured, high performance, scalable web server designed to compete with the likes of nginx. It has been built from the ground-up with no externel library dependencies entirely in x86_64 assembly language, and is the result of many years' experience with high volume web environments. In addition......