Plexus is the Personal * Portable * Private social graph which both listens to and shares your social message stream.

Plexus is a free and open source software ‘switchboard’ which handles all of your social networking needs.

In May 2010, when I announced my decision to ‘quit’ Facebook – because of a number of concerns ranging from privacy to duty of care – I created a Posterous account, so that I could continue to share media with my friends.  What I found, repeatedly, was that my Facebook connections objected to having to go somewhere else to ‘check’ some other data source to stay in touch with their friends.  Facebook provides a centralized way to keep track of everyone’s comings and goings – and as more people join Facebook, the ‘network effect’ grows, and that list of comings and goings becomes longer and more potent.

The important thing is the meeting point – the plexus – that brings someone together with everyone they’re trying to keep track of.  This function is performed by Facebook – to a certain degree.  What we all really need is a generalized and open solution to this problem, one which is personal, private and portable, so it can go anywhere we go, and be fit precisely to our particular needs.

This is the problem that Plexus solves, a problem we didn’t even know we had until just a few months ago, when the number of sources of social information suddenly exploded.  It’s not just Facebook, but Twitter and Flickr and Foursquare and LinkedIn and Delicious and Posterous and WordPress and LiveJournal and on and on and on.  People are coming up with great ideas for social sharing every day.  We need a way to manage that.  Plexus does.

On 26 June 2010, at PyCon AU, I introduced the Plexus architecture and a demo to a crowd of 150. You can read the transcript here, or play with the demo here.

If current plans hold (and they are), there should be a prototype release of Plexus around the 15th of September. We need your help!