Ionicons

Ionicons is the open-source, MIT-licensed icon set made by Ionic for its cross-platform framework, with icons drawn for web, iOS, Android and desktop apps. Most glyphs come in outline, filled and sharp variants, and the set ships as SVG, as a web component and through a searchable site where any icon can be copied. Search the site first, and if an icon is missing, the project invites you to file an issue suggesting it.