Above is how compressed folder tools help zip and unzip files in Windows 10 without using WinZip software. The tool is only for compression file of ZIP file form, but can’t apply to RAR format. Learn more options to extract RAR file, see How to Unrar RAR Archive File with WinRAR/WinZIP/7-ZIP. May 29, · Anyone know of any websites/services which permit free RAR file decompressions? I only have a couple of RAR files and I don't really want to download software just to open them. If not, can anyone recommend a simple, small and free RAR decompression application? Since many email providers impose a file size limit on email attachments, the RAR format is ideal if you want to compress and send multiple large files -- such as business contracts, digital. May 28, · Three free services to open RAR & 7Z files online WobZip. WobZip is a free service to unzip compressed files online. In addition to RAR files, it supports uncompressing many popular archive formats including 7z, Gzip, UDF, VHD, CAB, and CHM.