.LRN (dotLRN) is an e-learning platform built upon openACS core. It includes modules and configurations that are specific for learning communities. OpenACS (Open Architecture Community System) is a web application platform designed for high traffic community websites. It is built on a free and open source foundation. OpenACS is the foundation for many products and websites including the (www.dotlrn.org). OpenACS runs on AOLserver and uses either the PostgreSQL or Oracle (which is not open-source) relational databases. It uses TCL as its main language. AOLserver, postgresql and Oracle are used in some of the most demanding, high-traffic web applications in the world. WWW: http://dotlrn.org - Aldert aldert@nooitgedagt.net