For me it's the SNES Manual Archive[1], which is a way to browse nearly every single SNES manual. It's the nostalgia angle for me, and I love showing my oldest boy how gaming used to be.
So I'm curious, what are your website "comfort foods", it could be anything inside tech or maybe something completely beyond it. I'd love to find some to add to my bookmarks.
[1]: https://sites.google.com/view/snesmanuals
Simple and to the point
I am not as up to speed since the RedisLabs sponsorship, but Redis as a whole used to feel like a very pure expression of lost programming ethos. Small, complete, not a gazillion dependencies and frameworks needed. Just well written software, well documented with none of the marketing rubbish (why is everything "Blazingly Fast") and services upsell with other tools.
I still go there and hit the Random button, but it’s not quite the same.
If you’ve never read it, I highly suggest it. He won a Hugo award.