: The most common tool is 7-Zip , which is free and open-source. macOS : Use The Unarchiver or Keka , both of which are free. Mobile : Use apps like iZip (iOS) or 7Zipper (Android). Extract the Files :
If the file is part of a multi-part archive (e.g., .7z.001 , .7z.002 ), ensure all parts are in the same folder before opening the first one. : Kasten, Mona 7z
To access the contents, you must first extract the files using specialized software, as most operating systems do not have built-in support for the .7z extension. : : The most common tool is 7-Zip ,