What are some alternatives?
When comparing Flaticon and IcoMoon, you can also consider the following products
Font Awesome - Font Awesome makes it easy to add vector icons and social logos to your website. And version 5 is redesigned and built from the ground up!
Sketch - Professional digital design for Mac.
IconPharm - IconPharm is a library of open source icons with recoloring and resizing tools.
Adobe Photoshop - Adobe Photoshop is a webtop application for editing images and photos online.
Iconfinder - Iconfinder is the leading search engine and market place for vector icons in SVG, PNG, CSH and AI format..
Adobe Creative Cloud - Adobe Creative Cloud is a SaaS offering for graphic design, video editing, web development, photography, and cloud services.