DAA (stands for Direct Access Archive) is PowerISO proprietary and private disk image format which supports compression, password protection, and split into multiple volumes. It means that .DAA files are exact replicate of a disk, normally CD or DVD, and can be a software program, game, music CD, movie collections, bootable CD and any other CD or DVD discs you can found in the market or simply alternative contents built and put into .DAA image by somebody.

Unfortunately, PowerISO does not release DAA format to third party. It means that you have to download and install PowerISO application program to open or extract data and contents inside the .DAA files. PowerISO is a powerful CD/DVD image file processing tool, which allows you to open, extract, create, edit, compress, encrypt, split and convert ISO, BIN, NRG, CDI, DAA files, and mount these files with internal virtual drive.

Another unfortunate things PowerISO is not a freeware, but a trialware which costs USD $29.95 to register a license and receive serial key. Although there’re cracks or keygens (key makers or key generators) to register the trial copy of PowerISO to fully registered and full functionality available on warez sites, however you no need to violate the copyright law.

PowerISO offers users to download free copy of PowerISO for evaluation and try. The unregistered version has all the functions and features that paid registered version has, except that there is a dialog prompts users to register, and users cannot create or edit image files greater than 300MB. So it’s perfectly fine if you just want to open and extract the .DAA files in PowerISO Image Manager, burn the image to disc, or mount the .DAA image to virtual drive without burning to CD or DVD disc.

Download latest version of PowerISO from PowerISO download page.

If you’re using Linux or macOS (Mac OS X), PowerISO also provides a free utility to extract, list, and convert image files of ISO, BIN, DAA, and more. Download poweriso-1.3.tar.gz for Linux or poweriso-1.3-osx.tar.gz for macOS.

Another option for Linux users is AcetoneISO. AcetoneISO (also AcetoneISO2) is a free, open source CD/DVD image manipulator software for Linux with KDE or GNOME that let users mount images formats for Windows or Apple such as ISO, BIN, NRG, MDF, IMG, DAA, DMG and other formats, and then browse, extract, edit, add, convert or perform other tasks on the image. Download AcetoneISO from sourceforge.net.