For a professional to use the software, you need to have 7-Zip Portable for Windows. This is an application for Windows, which is used for decompressing and creating compressed files. It is used by people for different purposes. To make use of this application, you can either use the zip archive application. That is to extract the files or use the archive creator that helps you create an archive file. The archiver program is easy to use but requires some knowledge of the file format that is required for the decompression program. The archive creator needs the right file path to extract the archives, but you do not need to be familiar with the structure of the archive files.
All these programs are easily available for downloading, but downloading them from the Internet is always free. There are some companies who provide a trial version of the software that can be downloaded for free. However, the trial version has limited features, like it does not support GZIP compression, and it cannot perform various operations of the software. Once you downloaded the software, you can save it in your computer's disk. After the program is installed, you can run it anytime. If you want to install the program and remove it, you just need to uninstall the older version of the program and reinstall the updated version.
It is always recommended to keep the new version of the software and upgrade the software regularly, because it offers more advanced functions. This is because the newer version provides you more features of the software. One can get the software for free from the online website that offers such programs for download. This application is easy to use and the user should only need a few minutes to install it. It is always recommended to use this application if you need to use a program for both Windows and Macintosh OS.