Elgg is an open source software platform designed to allow people to easily connect and share resources.
Established in March 2004 by Ben Werdmuller and David Tosh, Elgg allows you to create a social network and host it on your own infrastructure, modifying the features to fit your specific needs. Users establish personal digital identities and connect with other people, collaborate with them and discover new resources through their connections. Plugins allow users on different social networks to collaborate, and provide specific functionality for tasks like project management, mobile browsing and collaboration through user-controlled wikis.
We show you how you can use Picasa to collaborate with others by building and sharing photo albums. view it
Easily share and collaborate on documents with sharing in Google Docs view it
To connect to your PC from your Android phone you can use LogMeIn Ignition! view it
We show you how to track changes to shared documents and communicate with other collaborators over Google Docs. view it
Collaborating on documents using comments and footnotes in Google Docs view it
Ubuntu is a totally free operating system that's loaded with features view it