What GEDCOM utilities for comparing .ged files are available

[ghcaveman]

So my primay interest here is to develop a solid family tree. My plan is to use gramps as my primary source of information, and visit the most popular genealogy websites and bring that data back to gramps by using .gedcom files. In this endeavor, my first attempt was from Legacy 10 desktop. After I implemented my gramps code changes to suppress custom/extraneous/unused tags from Legacy, I was able to track down a bad data export from legacy, where it also appeared to have crashed during the Legacy export process (this seems to be quite repeatable).

That being said - I would like to know what tools exist for comparing two gedcom/.ged files to determine if I am losing any data?