Techniques are presented for versioning file systems. Files and directories are versioned in a manner that permits the versions to be mounted on a device of a user. The original security restrictions that existed with the versions when they were versioned are retained with the mount. Moreover, the user can browse and access the versions via the mount using an existing file system of the user's device. Further, names for each of the versions include detailed information that reveals the relationship of each particular version to its parent version.