News Sniffer monitors news websites and detects when articles change. The versions are viewable and the changes are highlighted.

It currently monitors a few key feeds from the BBC News website and the Guardian website, excluding a few sections like Sports (as they change too often with just scores).

News Sniffer was written by John Leach, who can be contacted by email at hello@newssniffer.co.uk.

You can follow News Sniffer on twitter too, @news_sniffer

The code for News Sniffer is released as free and open source and is available at github.