Fortunately, high-quality free and portable alternatives exist, including , LibreOffice Draw Portable , and even Microsoft's own free Visio for the web . These tools meet most diagramming needs without compromising security or legality.
Microsoft Visio is typically licensed as a desktop application (Visio Plan 2, Standard, or Professional) or a web app (Visio Plan 1 and Visio in Microsoft 365). Security Risks microsoft visio portable free download