Look at #ImHex, they have achievements!
Working on my qoa encoder translation and #ImHex has been a tremendous time saver and excellent help.
A new version of the #FluxEngine GUI for my floppy disk flux-level reader/writer/analyser is out! It's now basically on a hacked-up version of the #ImHex binary editor, and is immeasurably better than the old GUI (i.e. mostly works, as opposed to mostly not working). Binaries are available for Windows and OSX.
(As a reminder, the FluxEngine client doesn't just work with the FluxEngine hardware but with a Greaseweazle or AppleSauce (the last read only). Or standalone.)
I've added support to see capabilities allowed by a given binary #AppArmor profile to my apparmor-binary project.
https://gitlab.com/zygoon/apparmor-binary
The animation shows the #ImHex hex editor.