Greplin - Index Facebook, Gmail. LinkedIn, Google Calendar, Evernote, Twitter, Dropbox

"[...]Greplin – it’s a startup that indexes your social stuff in the cloud, making all your Facebook, Gmail. LinkedIn, Google Calendar, Evernote, Twitter, Dropbox and just about everything else searchable. The easiest way to describe it is “the other half of search.”"

http://techcrunch.com/2011/04/27/greplin-1-5-billion-documents-indexed-six-engineers/

https://www.greplin.com/