Apache HTTP Server
Open Source
Apache HTTP Server, colloquially called Apache, is the world's most used web server software.
FileZilla Server
Open Source
FileZilla is a free software, cross-platform FTP application, consisting of FileZilla Client and FileZilla Server.
Abyss Webserver
Freemium
Abyss Web Server is a compact web server available for Windows, Mac OS X, and Linux operating systems.
nginx
Open Source
Nginx is a web server, which can also be used as a reverse proxy, load balancer and HTTP cache.
lighttpd
Open Source
lighttpd (lighty) is an open-source web server optimized for speed-critical environments while remaining standards-compliant, secure and flexible.
Caddy
Open Source
Caddy is an HTTP/2 web server with automatic HTTPS.
Compare Microsoft IIS with alternatives
Compare Apache HTTP Server and Microsoft IIS and decide which is most suitable for you.
Compare nginx and Microsoft IIS and decide which is most suitable for you.
Compare FileZilla Server and Microsoft IIS and decide which is most suitable for you.
Compare lighttpd and Microsoft IIS and decide which is most suitable for you.
Compare Abyss Webserver and Microsoft IIS and decide which is most suitable for you.
Compare Caddy and Microsoft IIS and decide which is most suitable for you.