Feather Icons - Simply beautiful open source icons
Brandkey.io - Brandkey's Logo API, Colour API and Website Categorization API. All the website data you need for $100pm per 5000 API Requests. Highly Accurate & Simple Integration.
IconStore - Free icon packs by first-class designers
SVG Porn - A collection of SVG Logos for developers
IconBros - Free and continuously growing high quality icons
Personalization API - Instantly pull company branding data to use in your projects