7zip is a free application which will make you able to compress the files to save hard drive space. Its compress speed is very fast and is very efficient in every respect.
2. What is 7Zip? 7-Zip is a free source software run under GNU/LGPL license. This software is used to archive the files. This is more advance than many application and compress files to higher degree. Its speed is appreciatable. It supports many formats like RAR files, ZIP files, TAR files etc. It is a GUI application and its graphical interface is very interactive. Its files are saved with the extension .7z. Using this application you don't even find any difficulty in compressing big files also. It is available for Mac, Windows, Linux.