I have checked the zip/compression free software applications out and gave some of the top ones a good run for their money but decided that Explzh is a great pick ,and it is totally free without any nagging window wanting you to pay up. It supports numerous formats, including RAR, ZIP, and ISO. Apart from archive creation and extraction, you will also be able to check for a virus within the program. I had a hard time settling on a zip tool but this one won me over after using it a while!