Yes! The basic philosophy is called "unhosted"[1], and there are several libraries that are made to help build unhosted apps. For example, I made a library call

Yes! The basic philosophy is called "unhosted"[1], and there are several libraries that are made to help build unhosted apps. For example, I made a library called byoFS[2] that let's users connect Dropbox as an encrypted data store. It has several proof of concept apps like an encrypted diary[3] and end-to-end encrypted chat[4]. [1] - https://unhosted.org https://unhosted.org [2] - https://github.com/diafygi/byoFS https://github.com/diafygi/byoFS [3] - https://diafygi.github.io/byoFS/examples/diary/ https://diafygi.github.io/byoFS/examples/diary/ [4] - https://diafygi.github.io/byoFS/examples/chat/ https://diafygi.github.io/byoFS/examples/chat/