For a specific look at the Dropbox computer application architecture, read the 2023 USENIX paper . It is the most up-to-date and technically accurate deep dive into the software running on your desktop.
If you are interested in the algorithmic theory that Dropbox is based on (rather than the app itself), the other "famous" paper in this space is: dropbox app for computer
✅ – See all your cloud files without taking up hard drive space. Download only what you need, when you need it. For a specific look at the Dropbox computer