A simple but useful tool that’s part of FITS’s collection is FFident, written by Marco Schmidt. He apparently is no longer maintaining it, and its page disappeared from the Web but was retained on the Internet Archive. It seemed like a good idea to make it more readily available, so I’ve put it, using its LGPL license, into a Github repository.
FITS uses its own copy of the source code, so this really isn’t tested at all in its own right, but it’s there for people to play with. I added a build.xml file and organized the code the way Eclipse likes it. I don’t have any plans to support it, but if anyone wants to play with it, it’s there.
Mad File Format Science 