Multi Application Bootable CD

I have a collection of cd’s of bootable utilities. They are programs such as memtest 86+, and hard drive test tools brom Seagate, Maxtor, anf Hitachi among other utilities.

I have googled and found out how to make multi-boot cd’s to havea Cd to install mutiple Microsoft Operating systems, but thats not what I want.
Most of the Iso’s are under 100 megs so I could put 6 on a cd which would help. Any links to tutorials would be appreciated.

Sorry, I had recommended a utility but realized it only had the same name as the one I had in mind.