Opensource.com - https://opensource.com/alternatives/dropbox
Dropbox is the 800-pound gorilla of filesharing applications. Even it’s a massively popular tool, you may choose to use an alternative.
Maybe that’s because you’re dedicated to the open source way for all the good reasons, including security and freedom, or possibly you’ve been spooked by data breaches. Or perhaps the pricing plan doesn’t work out in your favor for the amount of storage you actually need.