Zip files are very popular file formats as they can compress file formats and can be very useful when sharing files. Zip is one of the most popularly used file formats for sharing files and there are many tools like WinZip, WinRAR to open these files. But the most popular tools to open zip files, namely WinZip and WinRAR are not free tools. Although these apps are available for Windows 8 as well, you need to buy them to use it completely. Windows 8 being used for tablets as well, it is always nice to have a archiving and compressing tool which is free and also uses the new metro UI or the modern UI.