iList Studio might work for you (Score 1)

iList Studio is a graphical front end to MySQL. It supports forms, reports, all in a Macintosh application (no, I have no relation with them). Reading between the lines of the web site, it looks like they were doing their own DB and then switched to using MySQL as the back end. Because of that, they've added some "meta types" to MySQL, including calculation fields and images. It isn't free, but it is less expensive than the FileMaker 7 upgrade.