What's a software tool that would be useful?

[Austin B.]

I am a professional software engineer, and I have some extra time in the evenings which I would like to use to generate some side income. I'm just getting into REI and am excited for this adventure.

My question is this: what's a software tool you "wish" existed? Something relatively simple but useful? The idea for me is to put in about 10-20 hours a week and have a minimum viable product ready within 12 months. Not sure it's possible but I am considering it for potentially a long-term career. Thank you for any suggestions.