: Before extracting, run the archive through an antivirus tool or a service like VirusTotal to ensure it does not contain malicious code.

You can use 7-Zip on any computer, including a computer in a commercial organization. You don't need to register or pay for 7-Zip. www.7-zip.org Does 7z compress better than zip? - Microsoft Community Hub

If you are evaluating the file format itself, is highly regarded for several key features: