Being based on the upcoming 4MLinux 21.0 operating system, 4MRescueKit 21.0 incorporates the latest versions of the developer’s other Live CD projects, including Antivirus Live CD 21.0-0.99.2, 4MRecover 21.0, 4MParted 21.0, and BakAndImgCD 21.0, but it’s available exclusively to donors. Most of the included Live CDs are also based on the forthcoming 4MLinux 21.0 operating system, but each one ships with its own improvements. For example, 4MParted 21.0 comes with the GParted 0.26.1 open-source partition editor, 4MRecover 21.0 adds TestDisk 7.0 and PhotoRec 7.0 data recovery utilities, and Antivirus Live CD 21.0-0.99.2 is built around the ClamAV 0.99.2 antivirus software.