DevUtils reminds me of CyberChef [1][2]. The latter supports ~300 operations, is also open source and works entirely offline, but lacks the 'smart detect' feature of DevUtils since it's web-based.
CyberChef is definitely one of the big inspirations to build the app. I really like the way inputs/outputs are "pipeable" in CyberChef and actually looking for ways to do the same in DevUtils, without complicate it too much.