Dropbox → Competitors
A central place to access and share files.
When to use Dropbox
If you are already using GSuite, then Drive might be a better bet. However, Dropbox's ease of use and easy syncing features make it a serious contender otherwise.
When to use BlackHole
When you want to send a file to a teammate or someone in an easy but secure way.
It is anonymous and encrypted too. It can be useful for sharing what you are working on with anyone around the world.