Why Frappe Drive?
Drive is completely open source and will always be. Drive is built by Frappe - we've been here since 2007 and have a suite of products, all of which are open source.
Drive is great for teams. Join multiple teams - your work and family on the same account. Have a personal view, and fly between different views with ease.
Drive has a beautiful UI, and is an awesome experience for users. Other open source solutions do not even come close.
Drive is fast. Whoosh.