Resin supports the Java EE standard and features a mod_php/PHP-like engine called Quercus.
Resin Pro has been engineered to include: Scalability Development Production Ready App Server Web Server[9] Resin's market share is small in the grand scheme of Java Application Servers, but some high-traffic sites use it, such as the Toronto Stock Exchange, Salesforce.com, Condé Nast (parent company of Wired, Vogue, GQ) and CNET.
At every level, Resin matched or exceeded Nginx web server performance.
[12] Quercus is a Java-based implementation of the PHP language included with Resin.
Resin is provided in both an open-source GPL license and a Pro version with enhancements for enterprises.