[smoldesu]

My weird example is KDE's Okteta[0]. There are a lot of hex editors (and even more integrated debuggers) but Okteta stands out by being both fully-realized in terms of features and really well-made by the standards of other Qt apps. There are native builds for Mac and Windows[1], and it still sees active development these days. It's one of those dev tools that you get really excited to use, even if it's like bringing a chainsaw to a knife fight. It doesn't do everything, but it's always felt super intuitive to establish offsets, change bytes-per-line or make any other technical adjustment. There are probably more capable hex editors out there, but Okteta's got a good balance of usability and depth. Not sure if that boils down to a lack of contributions or narrow ambitions, but it makes it all the more poignent.

[0] https://apps.kde.org/okteta/

[1] https://binary-factory.kde.org/search/?q=okteta