Hello, First presented at DSC2005, rapache is a project supporting web application development using the R statistical language and environment and the Apache web server. The current release runs on UNIX/Linux and Mac OS X operating systems. http://biostat.mc.vanderbilt.edu/rapache/ rapache 1.1.0 now supports Apache threaded web servers, but the Apache Prefork Multi-Processing Module is still recommended. Please see: http://httpd.apache.org/docs/2.2/mpm.html for details about Multi-Processing Modules. Thanks, Jeff -- http://biostat.mc.vanderbilt.edu/JeffreyHorner