# OpenACS (Open Community Architecture System)

- **OpenACS** – (Open Architecture Community System) [http://openacs.org/](http://openacs.org/) is a toolkit for building scalable, community-oriented web applications. Used in \[.<span class="caps">LRN</span>:[http://dotlrn.org/](http://dotlrn.org/)\] 
    - technical reasons to use OpenACS [http://openacs.org/about/what-is-openacs](http://openacs.org/about/what-is-openacs)
    - comparison with <span class="caps">LAMP</span> and others [http://openacs.org/forums/message-view?message\_id=274218](http://openacs.org/forums/message-view?message_id=274218)