Dopplr makes your travel planning smarter. Dopplr is a service for smart international travellers. Dopplr members share personal and business travel plans privately with their networks, and exchange tips on places to stay, eat and explore in cities around the world. Dopplr presents this collective intelligence – the travel patterns, tips and advice of the world’s most frequent travellers – as a Social Atlas. You can use Dopplr on a personal computer and a mobile phone.