Crypt manager is a compilation of tools which allow to easily encrypt, open, close and uncrypt folders in a desktop environment. It is written in Python, it uses cryptsetup and LUKS as backend. Crypt Manager is composed of three parts:

A python module called cryptsetup.py
A command line tool called crypt-manager
A GTK interface called gcrypt-manager
An extension to the GNOME file manager Nautilus

Install Crypt Manager in Ubuntu