Research into indicates it is a specific maintenance update released around November 2022 for the Windows version of the utility suite. While the official software is distributed via installer, unofficial "Portable" versions found online are often modified by third parties to run without installation. Core Version Analysis (v6.0.1.3534)
This version primarily focused on stability and refining features introduced in the major 6.0 release: Parallels Toolbox 6.0.1.3534 | Portable
Compatible with Windows 10 (version 17763 or later) and Windows 11. The "Portable" Variant: Critical Risks Research into indicates it is a specific maintenance
Parallels does not officially offer a "Portable" version of Toolbox. Users seeking a portable version should be aware of the following: Parallels Toolbox system requirements The "Portable" Variant: Critical Risks Parallels does not
The "Network Usage" tool (monitors speed and daily usage) and faster one-click access to "Favorite" tools from the System Tray or Taskbar.