Are there any (preferably free) components or libraries that handle ISO files?
In particular I would like to be able to add files and save to ISO, as well as extract the
Did you try the TIsoLib component and the FreeBurner library which is a fork of the first, and seems more complete?
Otherwise, I know about the Binary Magic component, which is not free, but handles ISO file creation... and burning to CD.
Addition:
You may take a look at the mkisofs
command line tool. It's part of the cdrtools project, and is the root component of .iso creation in the Linux world. You can call this tool from command line, add and delete files from an .iso file. I've seen several commercial programs which use it to create boot CDs on the fly, from Windows. Be aware of the GPL license: you'll have to make a clear distinction between your software and the GPL software.