ISO Master is a free, open-source application that allows the creation of ISO9660 images, as well as reading and extracting files and directories from an ISO image.

ISO Master has a simple and clean interface, and it features the following functions:

• read ISO9660 images
• extract files/folders from an image
• create CD/DVD ISO images, including bootable ISO images
• built in GTK, blends well in GNOME
• supports ISO, NRG, MDF, saves only to ISO

ISO Master is included in the Ubuntu 11.04 repositories, so to install it just type in a terminal sudo apt-get install isomaster or use the Ubuntu Software Center.