Caucho Technology is based in San Diego, CA.
It is an information technology company that produces web server software and application server software as well as the originators of Quercus and Hessian open source projects.
Quercus, an open source standalone project that is part of Resin, is a PHP clone written in Java with speeds that exceed standard PHP.
[4] Hessian, another open source project from Caucho, is a binary web service protocol similar in concept to Google protocol buffers and BSON but predating them by almost a decade.
[5] Resin Server, Caucho's flagship product, was mentioned in the February 2012 Netcraft report as growing by a factor of ten in 2011.