They're both popular open-source web servers but, according to NGINX CEO Gus Robertson, they have different use cases. And Microsoft? Its web server has dropped below 10 percent of all active ...

Following in the footsteps of open-source companies like Red Hat and SUSE, Nginx's developers are offering a commercial version of its flagship open-source program, the popular Nginx Web server.

Nginx holds power on the other side of HTTP and SPDY network connections. It's not the most widely used Web server software -- Apache lead the market, according to NetCraft.