Citrix NetScaler
trend
849,875 websites

Citrix NetScaler offers both free and paid options

http://www.citrix.com/products/netscaler-application-delivery-controller/overview.html

Citrix NetScaler is an all-in-one web application delivery controller that makes applications run five times better, reduces web application ownership costs, and makes sure that applications are always available. It is deployed in thousand...

VS

nginx
trend
42,483,473 websites

nginx is free to use

http://nginx.com

nginx [engine x] is a HTTP server and mail proxy server written by Igor Sysoev.

Market Share by Top Websites

1 nginx is leading in Top 10K Sites, Top 100K Sites, Top 1M Sites and The Entire Web.

2 Despite its recent growth, Citrix NetScaler is still behind nginx in all market share segments.

Websites Categories

1 nginx has better usage coverage in more websites categories. Including Business & Industry, Arts & Entertainment, People & Society, Internet & Telecom and 242 other categories.

2 Citrix NetScaler hasn't got a lead over nginx in any websites category.

Geography

1 nginx is leading in most countries, including Russia, United States, Ukraine, United Kingdom and 220 other countries.

2 Citrix NetScaler hasn't got a lead over nginx in any country.