Shiftspace is a firefox extension which it’s makers call:
An Open Source layer above any webpage
It deserves mention here amongst the last few posts about Art Browsers as it gives users the potential to intervene, modify and subvert existing websites within the spaces used by all Shiftspace users, essentially mashing up content. So it’s a platform which promotes mashups but what’s interesting is that it does not preference any particular type of content such as images and it does not lock the content in as so many of these so called platforms do which are made in Flash or something else which instantly renders them useless.
Shiftspace has already got a lot of attention from artists working in new media with it’s honorory mention in the Prix Ars Electronica in 2006 and Turbulence commissioned artworks in 2007.