Animations
http://animista.net/
https://animate.style/
https://easings.co/
https://cubic-bezier.com/
https://keyframes.app/
Shadows
https://brumm.af/shadows
Borders and clip path
https://bennettfeely.com/clippy/
https://9elements.github.io/fancy-border-radius/
https://wweb.dev/resources/css-separator-generator
Gradient editor
https://shapy.app/
Transform editor
https://css-transform.moro.es/
Website builder
https://webflow.com/
SVG animation
https://www.svgator.com
Visual design
https://www.holabrief.com/
https://www.figma.com
https://www.framer.com/
https://rive.app/
http://airbnb.io/lottie/#/
Détourage
https://www.remove.bg/
https://mondetourageamoi.fr/
https://developers.google.com/web/fundamentals/design-and-ux/animations/
https://css-tricks.com/the-importance-of-context-shifting-in-ux-patterns/
https://www.smashingmagazine.com/2013/10/smart-transitions-in-user-experience-design/
https://medium.com/google-design/motion-design-doesnt-have-to-be-hard-33089196e6c2
https://uxdesign.cc/the-ultimate-guide-to-proper-use-of-animation-in-ux-10bd98614fa9
https://css-tricks.com/getting-deep-into-shadows/
Future concept
https://mxb.at/blog/layouts-of-tomorrow/
Transitions
https://tympanus.net/Development/OffCanvasMenuEffects
https://desandro.github.io/3dtransforms/docs/card-flip.html
Parallax effect
https://scrollmagic.io
https://keithclark.co.uk/articles/pure-css-parallax-websites/
https://webdesign.tutsplus.com/categories/parallax-scrolling
https://tutorialzine.com/2015/09/6-practical-examples-for-building-parallax-websites
https://basicscroll.electerious.com/
https://keithclark.co.uk/articles/pure-css-parallax-websites/demo3/
https://codyhouse.co/blog/post/sticky-hero-section
https://css-tricks.com/an-overview-of-scroll-technologies/
Morph buttons, loading & more
https://codepen.io/shshaw/pen/EbjvbQ/
https://tympanus.net/Development/ButtonComponentMorph/index.html
https://www.outsystems.com/blog/Posts/from-design-to-code_creating-and-animating-images-with-css
https://cssanimation.rocks/twitter-fave/
https://www.digitalocean.com/community/tutorials/how-to-develope-a-creative-upload-interaction-with-javascript-and-canvas
https://www.npmjs.com/package/flipping
https://slides.com/sarasoueidan/building-better-interfaces-with-svg
https://css-tricks.com/writing-animations-that-bring-your-site-to-life/
https://codepen.io/waynedunkley/pen/mJbdZO
https://css-tricks.com/gooey-effect/ # Morph children buttons
HTML
https://html5up.net/
https://buildfaster.co/
https://colorlib.com/wp/templates/
& Bootstrap
http://organicthemes.com/themes/
https://www.creative-tim.com/
http://bootswatch.com/
WordPress
http://organicthemes.com/themes/
dessign.net/premium-themes/
& Bootstrap
https://wptavern.com/18-free-wordpress-themes-built-with-bootstrap
Images search engines
http://finda.photo/
https://pixabay.com/
https://unsplash.com/
https://www.pexels.com/
http://www.stockvault.net/
https://allthefreestock.com/
https://burst.shopify.com/
https://ccsearch.creativecommons.org/
https://jaymantri.com/archive
Illustrations
https://haikei.app # shapes/patterns
https://undraw.co/
https://fresh-folk.com/
https://illlustrations.co/
https://www.blackillustrations.com/
https://usesmash.com/
https://isometric.online/
https://www.opendoodles.com/
https://icons8.com/vector-creator
https://generated.photos/ # AI generated faces
Icons
https://iconduck.com
https://thenounproject.com/
https://tablericons.com/
https://super.so/icons
https://www.flaticon.com/
https://ionicons.com/
https://material.io/resources/icons/
https://remixicon.com/
https://icons.getbootstrap.com/
https://systemuicons.com/
http://rostype.com/ # fonts
Parametric icons
https://heroicons.com/
https://teenyicons.com/
https://tablericons.com/
https://holasvg.com/icons/
Audio
https://artlist.io/
http://www.quora.com/Whats-the-difference-between-UI-and-UX-design
https://www.smashingmagazine.com/2018/07/persuasion-user-experience-design/
https://heydesigner.com/blog/mental-models-in-product-design/
http://bdavidxyz.com/blog/the-simplest-landing-page/
https://designsystemsrepo.com/
https://www.reallygoodux.io/
https://darkpatterns.org/
http://ui-patterns.com/
http://uxmyths.com/
https://victoryofgoliath.com/minimum-viable-designs.html
https://digitalpsychology.io/anchoring/
https://www.coglode.com/cookbook