&gt; 1. Will there ever be a zero-knowledge option at Dropbox?<p>JungleDisk provides this. It offers a Dropbox-like native interface powered directly by S3 with support for client-side encryption. That is, your computer encrypts the data locally and then stores it directly into S3. You provide your AWS credentials to the client at setup time.<p>Not needing to depend on any company beyond AWS to store my data appealed to me. Beyond the trust that one must place in the JungleDisk client itself, at least.<p>It used to be available to buy as a single software program, but now it&#x27;s a monthly subscription service.