Open Conference Systems

"Open Conference Systems (OCS) is a free Web publishing tool that will create a complete Web presence for your scholarly conference.

* create a conference Web site
* compose and send a call for papers
* electronically accept paper and abstract submissions
* allow paper submitters to edit their work
* post conference proceedings and papers in a searchable format
* post, if you wish, the original data sets
* register participants
* integrate post-conference online discussions
"

http://pkp.sfu.ca/?q=ocs