Did you try googling for it at all?

http://www.fenestrated.net/~macman/stuff/HFVExplorer/ <-- Not sure which version on pkzip he used to archive the files.

http://www.the-underdogs.info/tools/hfvexplorer.zip

http://mes.emuunlim.com/bin/macemu_extras/hdexp131.zip <-- has some other cool mac emu tools there also