Apache Lenya is a Content Management System (OverviewCMS).
Warning: Many pages in this wiki are very much outdated with respect to the current Lenya 2.0 trunk. Please take the information you find in here with a metric ton of salt. Your first reference for 2.0 matters should be the staging documentation at http://lenya.zones.apache.org/docu/docs/2_0_x/index.html (which is periodically transferred to the main Lenya site).