Ask HN: What website you couldn’t do your job without, and useful to the layman

I am currently building a web directory of the best sites I ever came accross, because I keep sharing them individually with friends which is inefficient. The most useful websites are often targeted at professionnals but contain good information that will also help the curious mind.

One example (I have no affiliation) is Examine which does science summaries and is targeted at health professionals : their research pages are exhaustive and include sources.

What is the one website you know that fits this pattern?

Readwise has become essential for me. It's an RSS reader, read later app, and spaced repetition app in one. The idea is that you take in new articles to read, highlight them, and then review the highlights daily via spaced repetition.

It's brought to life for me Richard Feynman's idea that the way to do great work is to keep a dozen questions at the forefront of your mind and wait for inspiration. It's remarkable how often I'll see something in my daily review that helps me reframe my approach to a question.

I use this a lot: https://jsbeautify.org/

It has a downloadable version you can run locally, but it's handy for quick and dirty beautifying of code when you're in a hurry, and don't want to pass the local version on to other machines.