UltraISO

UltraISO  is an ISO CD/DVD image file creating/editing/converting tool and a bootable CD/DVD maker , it can directly edit the CD/DVD image file and extract files and folders from it, as well as directly make ISO files from your CD/DVD-ROM or  hard disk. At the same time, you can maintain the ISO bootable information, thus creating your own bootable CD/DVDs. You now have the power to make and  edit your own ISO files, and then burn them to CD/DVD for your own needs. 

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HJ-Split

HJSplit for Windows is a freeware file splitter which runs on all 32 bit and 64 bit editions of Windows. HJSplit supports file sizes of over 100 Gigabytes, it can split files, join/recombine files, create MD5 checksums, compare files and "run without install". HJSplit is also fully portable: you can run it directly off a DVD, CD or USB stick.
HJSplit for Windows does not need to be installed nor does it depend on any special DLL's. Just extract the contents of the zip file into a directory of your choice, and start the program by double clicking on hjsplit.exe.

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