Perfect Alternatives

Harp is a production-ready web server which helps to build static sites and client-side applications using Markdown, Sass, CoffeeScript without any configuration.

Puma is a small library that provides a very fast and concurrent HTTP 1.1 server for Ruby web applications. Unlike alternative Ruby Web servers Puma was built for speed and concurrency.

Sanic allows to use the async/await syntax added in Python 3.5, which makes your code non-blocking and speedy.

Caddy is the ultimate web server with automatic HTTPS, boasting powerful features and enterprise-readiness. Experience the difference with this open source tool written in Go.

Lighttpd is a web server with a very low memory requirements and cpu-load compared to alternatives. lighttpd has such features as FastCGI, CGI, Auth, Output-Compression, URL-Rewriting and many more.

A flexible & easy-to-manage and secure Web server for hosting web applications on the Web.

Nginx (engine x) is a high performance open source web server powering the biggest web sites on the Internet.

Bitrix24 is an all-in-one collaboration and project management tool, offering CRM, messaging, tasking, time management, and more. Used by millions of businesses worldwide and available in 18 languages.