Icon Generator - Icon Generator is a little application built on AIR that lets you generate a CS5 or Web 2.
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.
IcoFX - IcoFX is an all-in-one solution for icon creation, extraction and editing.
Icono Maker - Icono Maker is an icon maker for Windows.
png2ico - Program to convert .PNG files to a Windows icon resource, such as used for website/bookmark icon favicon.ico. Available for different platforms.
Img2icns - Image2icon provides the fastest way to customize your icons, easily and free.