When people refer to , they are usually looking at the source code package for 7-Zip , which is primarily written in C++. One of its most interesting (and perhaps surprising) features isn't just compression, but its capability as a system-level file manager . The "TrustedInstaller" Capability
: The code in cpp.7z is designed to be highly compatible; updated versions of the 7-Zip backend can still run on versions of Windows as old as 24 years (like Windows NT 4.0 or Windows 98) while still utilizing modern multi-core processors. cpp.7z
: The 7-Zip File Manager can sometimes move, rename, or delete files that are protected by TrustedInstaller or system-level ownership without requiring you to manually "take ownership" in Windows. When people refer to , they are usually