Tech deals: InvisibleHand now available for Safari 5

Riding the wave of the announcement of Safari 5, the free real-time shopping tool, InvisibleHand, has just announced that it will now be available for Apple's new Safari 5 browser.

First launched as an add-on to Firefox, the handy link-based service works by trawling the web for products that you're currently eyeing up; if found cheaper it will send you an alert and link.

One of the first extensions for the new browser, InvisibleHand has currently been downloaded more than 400,000 times and has "identified more than £13 million in savings in the UK".

The list of browsers covered by InvisibleHand now includes: Apple Safari, Microsoft Internet Explorer, Google Chrome and Mozilla Firefox, and can be downloaded here.