Nginx Plus has garnered more than 100 customers since it was launched last August. Most of the customers have been enterprise clients, especially those in the midmarket, Robertson said. A broad range of industries have tried the product, including organizations in retail, entertainment, education and government, he said.
Nginx is the third-most-widely used Web server software, running on more than 14 percent of all sites, research firm Netcraft found in its January 2014 Web server software survey. Only Apache (42 percent) and Microsoft's Internet Information Services (29 percent) are more widely used.
Among the top million most-visited sites on the Web, Nginx ranks second on Netcraft's January survey, used by more than 15 percent of these popular sites.
Nginx Plus is available on a subscription basis -- $1,350 a year for standard support and $2,700 a year for premium support.