OSFMount allows you to mount local disk image files (bit-for-bit copies of a disk partition) in Windows with a drive letter. Developed by Passmark Software
License: Free
UltraISO is primarily focused on creating and editing ISO files, offering a wider range of features for ISO management. In contrast, OSFMount is a lightweight tool specifically designed for mounting disk images, making it more user-friendly for mounting tasks but lacking advanced editing capabilities.