Linux App Finder

Baobab is able to scan either specific directories or the whole filesystem (local or remote), in order to give the user a graphical tree representation including each directory size or percentage in the branch. A graphical treemap is also provided for any selected folder as far as a full file-search functionality. Baobab can open/delete folders and files. Auto-detects in real-time any change to the mounted devices and to user's home directory. Web site: http://www.gnome.org/projects/baobab

Starting from its v.2.4.2, Baobab has been included as a component of gnome-utils with the name 'Disk Usage Analyzer', so it is no more updated as a stand-alone product, but it will follow gnome-utils release cycle.