The best Google Chrome extensions 2012

12. Google Voice Google's voicemail service utilises this software to extend right into the browser. It offers on-the-fly access to your messages, and can initiate VoIP (Voice over Internet Protocol) calls over Google Voice. Every phone number you see on a site becomes clickable for calling.

13. Offline Google Mail Web-based email doesn't have to be exclusive to an Internet connection. This extension ensures there's a cache of your messages for reading when you're offline, and you can compose new messages and "send" them, synchronising everything once you reconnect.