You can find the opsoro live demo here:

http://www.opsoro.org/opsoro/

Use the following login information...

user:

opsoro

password:

demo

Opsoro leverages technologies that are used and provided by Alfresco as well as additional frameworks:

Alfresco Content Repository

Alfresco have integrated state-of-the-art open source and Java technology such as Spring, Hibernate, Lucene into a simple-to-use, extensible Open Source Enterprise Content Management (ECM) system. An Alfresco repository can be accessed via Axis2-based web services or by using the RESTful Web Scripts.

Alfresco Web Scripts

opsoro is an alternative web client for the Alfresco Enterprise Content Management Plattform. It's goal is to provide an easier user interface with a richer user experience by leveraging the latest web technologies. Like Alfresco, opsoro is open source software released under the GPL.