A new version of HexEdit has been released - version 2.0.4. This version addressed a lot of the bugs and issues that were present in the earlier beta versions. HexEdit should be fairly stable and usable now!
HexEdit is finally seeing the light of day as a fully open-sourced project. I have a few changes to make in order to tidy up the source-code and make it presentable. Expected release date is very soon now.