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, The Guardian, The New York Times, The Independent, The Washington Post and The Intercept.

News Sniffer was written by John Leach. You can contact News Sniffer 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.