Ttfm (time travelling file manager) is a graphical file manager that allows a user to navigate the filesystem namespace and previous snapshots for an ext3cow filesystem.

it provides a time shifting interface allowing you to quickly see the snapshot of the filesystem in a previous moment, provided you took a snapshot in that moment.

important: you need a patched kernel with ext3cow support and the snapshot utility in order to properly use this application (it will run on non-ext3cow systems, though)