flaticon - 1,468,000 vector icons grouped in 30,310 packs.
Streamline - 100,000 icons, illustrations and emoji for all your projects.
IconSear.ch - SVG icon search engine with over 76,000 icons indexed.
LogoSear.ch - SVG logo search engine with over 200,000 logos indexed.
iconarchive - Professional tag based icon search engine with more than 600,000 icons.
Generic
Simple icons - Over 1000 Free SVG icons for popular brands.
Devicon - A set of icons representing programming languages, designing & development tools. You can use it as a font or directly copy/paste the svg code into your project.
Feather - A collection of simply beautiful open source icons.
Font Awesome - Scalable vector icons that can instantly be customized — size, color, drop shadow, and anything that can be done with the power of CSS.
Iconic - An open source icon set with 223 marks in SVG, webfont and raster formats.
IconSweets2 - Is a huge set containing over 1,000 custom designed icons. IconSweets 2 will quench your icon thirst for all your iPhone, iPad & Android apps or new web projects.
Ionicons - The premium icon font for Ionic Framework.
Boxicons - Boxicons is a simple vector icons set carefully crafted for designers and developers to use in your next project.
Eva Icons - Eva Icons is a pack of more than 480 beautifully crafted Open Source icons for common actions and items.
Jam Icons - Jam icons is a set of icons designed for web projects, illustrations, print projects, etc. Shipped in JavaScript, font & SVG versions.
Remix Icon - Remix Icon is a set of open-source neutral-style system symbols elaborately crafted for designers and developers.
Themify Icons - Themify Icons is a complete set of icons for use in web design and apps, consisting of 320+ pixel-perfect, hand-crafted icons that draw inspiration from Apple iOS 7.
SuperTinyIcons - Miniscule SVG versions of website and app logos, under 1KB each.
Pepicons - Pepicons is a completely original 80s themed set of hand-crafted icons, made in two retro variants: Pop! and Print ❏
css.gg - Open-source CSS, SVG, and Figma UI Icons available in SVG Sprite, styled-components, NPM & API
Evil Icons - Free ‘plug and play’ set of SVG icons designed specifically for web projects
Lineicons - 532 Line Icons for Designers and Developers
Line Awesome - Is a free alternative for Font Awesome 5.11.2. It consists of ~1380 flat icons that offer complete coverage of the main Font Awesome icon set
VectorLogoZone - Over 3,500 consistently formatted SVG logos.
Icons8 Line Awesome - Swap Font Awesome for modern line icons in one line of code.
Akar Icons - Perfectly rounded icon library made for designers and developers as React components.
Tabler Icons - A set of over 1500 free MIT-licensed high-quality SVG icons for you to use in your web projects.
Lucide - A fork of Feather Icons with more than 500 additional icons.
Flowbite Icons - Open-source collection of over 430+ solid and outline icons built for Tailwind CSS and Figma.
Phosphor Icons - Phosphor is a flexible icon family for interfaces, diagrams, presentations — whatever, really.
Map / Countries
StateFace - All 50 states plus D.C. and a wee continental U.S. map.
flag-icon-css - A collection of all country flags in SVG — plus the CSS for easier integration.