A popular choice for Mac users to handle various archive formats, including .7z.
While "8.7z" could be a simple versioning number, it often appears as part of a larger filename for specific software or patches, such as: Datei herunterladen 8.7z
If you don't want to install software, websites like ezyZip or Extract.me allow you to unzip files directly in your browser. A popular choice for Mac users to handle