Other tools

CSS

• animista.net - Cool genarator for CSS animations
• easings.net - Easing functions for CSS animations
• ui.glass - Glass ui generator

JavaScript

• toptal.com - Generate key codes with a key press

Productivity

• Raindrop.io - manage your bookmarks way easier than you think

Diagrams

• Drawio - free app for diagrams
• Excalidraw - draw diagrams by hand fast
• Lucidchart - intelligent diagramming application

Screenshots

• Greenshot - cool tool to make screenshot and measure pixels like on MacOS

Search engines

• You.com - interesting alternative to Google, which suggests code snippets, Stack Overflow answers or even YouTube videos

Image services

• Unsplash - free for use images