AWS CCP - AWS Miro charts and flow diagrams I found on Reddit. I think this is more for Software Architect Associate Certification.
The Git Parable - One of the best articles explaining Git. To read when you want to sleep or when you are feeling extra productive during office hours.
HTTP Status Codes - Gives you ALL the codes on the first page. No BS.
Micro Frontends - Excellent article from 2019 which is still very much relevant and applicable. A very detailed idea of what a micro frontend is and some more.
Web Content Accessibility Guidelines - WCAG - Super handy documentation on accessibility and from the official source itself. They also have a small "How to use" section at the very top of this page. Very handy if you are not very familiar with the jargon.
globsterXYZ - Matches all files and zero or more directories and subdirectories. Easy way to make sure file directory catching paths are correct and handle edge cases.
STOP using local storage! - Gives you a great explanation about what is exactly Local storage and why to use it or not to use it. Also tells you what to use instead of local storage.
Sanfoundry - Like MCQs because you are a madlad? well, here you go.
Management
Makers Schedule - A Neat article explains managers' schedules vs makers' schedules. Worth a 4 min read.
How to be a -10X Engineer - How to be a -10x Engineer. This won't be your waste of time, but some of the work you are doing at your workplace might be a waste of time.
Tutorial based
Javascript
Modern Javascript Tutorial - Just good ole JS tut. There are a lot out there, some might even be better than this but this one is decent. One with a better UX.
Clean Code Javascript - Guidelines to write a cleaner code, more like suggestions/best practices. A great resource to look into now and then, especially when working on a new project/ working with a team to set up coding/review guidelines.
Rust
Rust - Half hour in text - Just start here if you are wondering what is rust and where do I start. Here. :)
General
Learn X in Y minutes - A very concise guide for all the main features of Y amounts of things out there. The name says it all. Non-English guides are mostly the most helpful and unique thing about this website.
Compare NPM lib Trends - As the name says, comparing multiple libs out there. Perhaps gives more idea which is more popular lib or where the industry trend is going? If these things matter to you then this is a great comparison tool.
React
Typescript
Django
Laravel
Facebook
Microsoft
Google
Alibaba
D3
Tencent