TowerVault

A private backup tool. It keeps a second, encrypted copy of its owner's own files in that owner's own Google Drive.

What it does

TowerVault runs on the owner's own computers. Each night it makes an encrypted backup of the owner's work. It then copies that encrypted backup to a folder in the owner's Google Drive, so one failed disk can never be the only copy.

Who it is for

TowerVault is a personal tool with one user: the person who runs it. It is not a public service. There is no sign-up, and nobody else can use it.

How it uses Google Drive

It asks only for access to files and folders that TowerVault itself creates.
It cannot see, read or change any other file in the Drive.
Every file it uploads is encrypted on the owner's computer first. The key never leaves the owner's computers.
It uses the open-source tools rclone and restic.

Privacy

TowerVault collects nothing, shares nothing and sells nothing. The full statement is in the privacy policy.