Portable PowerISO 3.8

Registered - Portable - No Install - No Bullshit PowerISO is a powerful CD/DVD image file processing tool, which allows you to open, extract, create, edit, compress, encrypt, split and convert ISO files, and mount these files with internal virtual drive. It can process almost all CD-ROM image files including ISO and BIN. Main Features: Support almost all CD/DVD-ROM image file formats(ISO, BIN, NRG, CDI, DAA and so on). Note: DAA(Direct-Access-Archive) is an advanced format for image file, which supports some advanced features, such as compression, password protection, and splitting to multiple volumes. It can be handled directly just like other formats, such as ISO, BIN, ... Open and extract ISO File. Create ISO file from hard disk files or CD/DVD-ROM. Edit an existing ISO file directly. Convert image files between ISO/BIN and other formats. You can convert almost all image file formats to a standard ISO format file. Make bootable ISO file, get boot information from bootable ISO file. Make floppy disk image file. Optimize files to save disk space while saving ISO file. Mount ISO file with internal virtual drive. You don't need install any other virtual drive software. Can be used easily. PowerISO support shell integration, context menu, drag and drop, clipboard copy paste... System requirement: Windows98/Me, Windows2000/XP/2003/Vista operating system or above. Note: The internal virtual drive needs Windows2000/XP/2003/Vista or above. Intel Pentium 166MHz or above.

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OmniBOT (2007-11-06)

Great stuff .. thanx. I am seeding.
This is not technically "portable" since it does try to install some compnents in your registry and filesystem. However it is tolerably portable as it needs no more than this DL to work.
Winpooch takes care of the registry and stuff and this version seems to have no real reason to install anything at all.
It's the only version of this godawful program I use.