Chatterous is group chat combining the web, im, email and your phone. Once you create a group, you can chat with your friends through im, email or your phone. No need to use the website! Your friends don't need to sign up to chat with you! They can reply right on their im, email or phone. Once you've created a group for your friends, everyone in the group can reach each other whether they're on im, email or out and about on their phone.