Hello guys 
When I started building on Bubble, my apps were really looking like 2000’s ones and I was never proud of them because of how ugly they were …
After doing a lot of research and thanks to a friend who works in design/communication I gather some really helpful website to build a beautiful website!
I wanted to share some new Bubblers (and why not some old ones) the best websites I gathered.
DRIBBLE
You may know it but it’s a great source of inspiration for UI design
https://dribbble.com/An example if we search “dark theme”
CHECKLIST.DESIGN
A collection of the best UX and UI practices / advices.
https://www.checklist.design/You have access to a lot of pages / component checklist with great concrete inspirations
COLORINSPIRATION
Understand what color match each other is a real job, this website give you predefined color palettes, generate gradient, …
https://colorsinspo.com/Preview of some tools
FONTJOY
Generate font combinations with deep learning
https://fontjoy.com/
SCREENLY
Generate modern and simple screenshots of your website
https://www.screely.com/
LOTTIEFILES
One of my favourites. Tons of free animations for your app with advanced customization.
https://lottiefiles.com/
LAWS OF UX
Laws of UX is a collection of the maxims and principles that designers can consider when building user interfaces.
https://lawsofux.com/
Feel free to post your tools if you have some.
Also, special thanks to @ralphlasry as most of them come from him!
Cheers 
