Short answer: For a large mixed library like Flaticon, try Icons8, The Noun Project or Iconfinder. For websites and apps, open-source sets such as Material Symbols, Heroicons, Lucide and Phosphor are free to use, also commercially, under their licences.
- Icons8 large library in many matching styles
- The Noun Project huge collection of simple symbols
- Material Symbols Google’s free icon set
- Lucide and Phosphor open-source sets for developers
Flaticon is popular because it has a huge number of icons in many styles. The catch is the licence: free icons often require attribution. These alternatives either have a different range or a simpler licence.
Icons8
Icons8 offers icons in dozens of consistent styles, so you can keep a whole project in one look. Like Flaticon, free use usually requires a link back.
The Noun Project
The Noun Project has a very large collection of simple, single-colour symbols made by designers worldwide. Handy for presentations and infographics.
Iconfinder
Iconfinder combines free and premium icons and lets you filter on licence, which saves time when you need icons for commercial work.
Font Awesome
Font Awesome is a favourite of web developers: you add the icons to a site as a font or SVG. The free version covers the basics, Pro adds more styles.
Material Symbols
Google’s Material Symbols are free under the Apache 2.0 licence and come in several styles and weights. They fit well with Android and Material Design.
Heroicons
Heroicons is a small, neat set from the makers of Tailwind CSS, released under the MIT licence.
Lucide
Lucide is an open-source set with a consistent line style and packages for most web frameworks.
Phosphor
Phosphor offers a flexible set with six weights, from thin to fill, also under the MIT licence.
Check the licence
Always read the licence on the site itself before you use icons in a product, logo or paid project. Attribution rules and restrictions differ per site and sometimes per icon.
