 Opera introduced Widgets, small web applications, a built-in BitTorrent client, improved content blocking and a built-in tool for creating and editing search engines.Opera also added ability to read MHTML and to save the web page as archives.Version 9.1 (released in 2006) introduced fraud protection using technology from GeoTrust, a digital certificate provider, and PhishTank, an organization that tracks known phishing web sites.