Program for TeamWork?

Hello,
I am working on a project with my team, but exchanging files is very expensive (time factor).
Do you know any exchange/sycronisation platforms, for developing in teams? - We already use Dropbox.
Thanks a lot,

Hello. Why not have a private Github repository or a private Google Drive folder? Github’s made for that type of thing + version control. That’s my best bet anyway.

Thank you mate - you helped me out a LOT! :3

Perforce Source Control

Glad to be of assistance! Best of luck in your gamedev journey!