Ask HN: What tool do you wish existed?

[AvImd]

I am looking for ideas for a next project, and I'd really like to make something people really need and are willing to pay for. What is your need that can be fulfilled with a piece of software (or maybe with something else)?

[nikivi]

There's lots. I made a Trello board.

https://trello.com/b/alB1ryRP

[AvImd]

What would be the top several items if it was a priority list?