One of our Technibble forum members, PcTek9, and a handful of other Technibble members have compiled a large list of CDs for various computer repair tasks. In this list, the following types of CD are available for download: Antivirus Boot CDs, Recovery Disks, Hardware Diagnostic Boot CDs, Network Testing/Monitoring, Data Recovery Boot CDs and Special Purpose CDs.
Some of these are free to download, some are not. Be sure to read the EULA for the CD’s you download and the applications you use to make sure you are allowed to use them in the manner you plan to use them in. Many of the CDs contain a variety of different programs and some of the applications are free to use as you please, but some of them disallow commercial use. So be sure to read and abide by the EULA for whatever you use.
Also, some of these CD’s may set off an antivirus false positive due to their virus removal, password cracking, system file changing nature. Konboot is one such CD that will set off antivirus software. Its best to scan the CDs that are setting off your antivirus using a site like Virustotal.com and make your own decisions.