"With Dropbox Infinite, we’re going deeper: into the kernel—the core of the operating system. With Project Infinite, Dropbox is evolving from a process that passively watches what happens on your local disk to one that actively plays a role in your filesystem,"

There are various alternatives to Dropbox, such as # and # Dropbox is an untrustworthy company run by untrustworthy people.

https://motherboard.vice.com/read/dropbox-infinite