I am working on exposing the file system to the web browser using OS like GUI controls and then selectively sharing parts of it to specified users with security

I am working on exposing the file system to the web browser using OS like GUI controls and then selectively sharing parts of it to specified users with security controls. It’s kind of like turning your computer into a private cross-OS shared drive. The problem this solves is sharing. Sharing between devices/users should be as simple as copy/paste initiated by either user like everything is local.