Icons

Tabler Icons - 1424 Open source free SVG icons for you to use in your web projects.
Tabler Icons.io - Over 4000 pixel-perfect icons for web design and development
SimpleIcons - 1463 Free SVG icons for popular brands
SVG Porn - 1000+ free SVG icons for you to use in your web projects.
Feather Icons - Simply beautiful open source icons
glyphs.fyi - Mightiest Icons on the Web
iconoir.com - Your new default library
sargamicons.com - A Collection of 250+ Open-source Icons Devoted to Match Your Exquisite Designs.
untitledui.com/icons - 1110 free icons for Figma

Search engines

The Noun Project - Icons for everything
Flaticon - 3,000,000+ Free vector icons in SVG, PSD, PNG, EPS format or as ICON FONT
Icons8 - Icons, photos, music, and design tools

Google Material Icons - Material icons are delightful, beautifully crafted symbols for common actions and items.
Font Awesome - The world's most popular and easiest to use icon set just got an upgrade. More icons. More styles. More Options.

SVGBox - SVGBox makes it dead-easy to include icons in your project. Simple <img> tags