Dropbox is a synchronization system available for free for up to 2 GB of disk space which enables you to keep important files synchronized across all your devices, such as PCs or mobile phones. By referring friends to the service, users can gain additional disk space up to a total of 16 GB. A paid subscription starts at 100 GB storage space for $9.99/month.

Dropbox was founded in 2007 by Drew Houston and Arash Ferdowsi. Their current traffic levels revolve around 3 million unique monthly visitors.

Drew and Arash relocated in San Francisco in fall 2007 and secured seed funding from Y Combinator. In fall 2008, Sequoia Capital and Accel Partners invested $6M Series A funding in the project.

In an Youtube video recorded May 30, 2012 at Stanford, Drew shares his views on how to build a successful service startup, the importance of figuring out distribution, why hiring great people matters and how to keep the product simple and usable.