Win Zip is the most popular file zip software available from the earlier days. These zip software help the user to save the hard disk space by shrinking the file size.

The effect of the free unzip program is more in the case of document and word files. If there is a folder containing word documents and the file size is about 80 MB, then using the free unzip program, one can zip the folder to a size of about 15 MB.

The file zipping will take more time depending on the number of files that are zipped. In the case of word document files, the time taken will be more as the file size is reduced to a great extent. Win Zip software can be downloaded free of cost as an evaluation version from the various web sites and a Google search will return the web sites from where the evaluation version can be downloaded.

This free unzip program does not have much effect when used with audio and video files. The file size remains more or less the same after using the software on these audio and video files. Hence the free unzip program is proved effective only on document files and has no effect on the video and audio files. Mostly the zip software is used to back up the file contents and copy the contents in a CD or a DVD as a back up copy.

There is more recent software like Win Rar which is more effective than the traditional Win Zip software. The free unzip program can be used to retrieve the data once the hard disk of the computer becomes unable to read and access. The unzip program can be used to unzip the back up contents and then copy the same in to the new hard disk drive there by preventing loss of vital and crucial data. These types of software's can be downloaded from their company web sites respectively and only the trial version will be available. In the case of companies using the software, they can purchase the software directly from the company web site. The individual users can download the full version of the software as torrent files from certain web sites like Torrentz and other similar web sites. Also, the license key to activate the trial version is downloaded from certain web sites which are exclusive for getting license keys.