Faviconer - Faviconer.com, or favicon generator, is online tool for creating favicon.
Icon Converter by RedKetchup - Convert a PNG, JPEG, WEBP, HEIC, GIF, TIFF, BMP, or SVG image to the ICO format. Customize the icon background and rounded corners. Create a compatible Windows ICO file from an image.
ConvertIcon! - Converticon is a simple icon utility.
png2ico.com - Fully featured free online PNG, JPG, TIF, BMP & GIF etc. to ICO converter from sohOpen.
Ordinatore - Those who want to tidy up their Macs will surely love this application.
Favicon Generator by RedKetchup - Customize the favicon text, colors, font, and corners. Generate the favicon images in all the required sizes. Get the favicon HTML code for all browsers and platforms.