MakeAppIcon - MakeAppIcon resizes and optimizes your icon designs into all formats needed for iOS and Android mobile app!
SVG Porn - A collection of SVG Logos for developers
Bjango App Icon Templates - App icon templates for PS, Ai, Sketch and Affinity Designer
ResizePixel - Free image editor to crop, resize, flip, rotate and convert images online
favicon-generator.org - Generate icons for website and mobile app stores.
SVG Artista - Little tool that helps you create SVG animations