The best alternatives to Atlas Icons are Feather, IconShock, and Iconduck. If these 3 options don't work for you, we've listed a few more alternatives below.
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Feather is a collection of simply beautiful open source icons. Each icon is designed on a 24x24 grid with an emphasis on simplicity, consistency and readability.
free icons and premium icon packs. Flat icons, Material icons, Glyph icons, iOS icons, Font icons, and more design styles. Vector files, including PNG and SVG icons. Ready for apps, web or social media projects.
Iconduck is a collection of 506 (and counting) open source icon and illustration sets.
They can be searched through and downloaded, and are available for personal and commercial purposes (depending on the license, some may request a backlink).
Fluent Emoji are a collection of familiar, friendly, and modern emoji from Microsoft. Creators can take most of these bright and colorful 3D emoji and remix them into stickers, use them in content, or create unique sets of emoji.
An interactive historical atlas covering the history of the world, day by day, from 3499 BC to 2022 AD. It includes more than 4 million intriguing statistics (maps, time series, timelines) and summaries about polities, rulers, wars and cities.