 In July 2012, Dropbox acquired TapEngage, a startup that "enables advertisers and publishers to collaborate on tablet-optimized advertising".The following December, Dropbox acquired two companies; Audiogalaxy, a startup "allowing users to store their music files and playlists in the cloud then stream them to any device", and Snapjoy, a company that allowed users to "aggregate, archive and view all of their digital photos from their cameras, phones and popular apps like Flickr, Instagram and Picasa, and then view them online or via an iOS app".In July 2013, Dropbox acquired Endorse, a "mobile coupon startup".