Microsoft recently made some significant enhancements to its Visio add-in for Excel, enabling users to create Visio diagrams from within Excel. Here's how it works.

Sadly, this tool was removed some time ago. Even so, it is possible to create a detailed network diagram using only Windows 11 and Microsoft Office (including tools such as Excel and Visio).

A list of free Microsoft Visio alternative software to prepare complex diagrams includes Kivio, Graphviz, Inkspace, Open Office Draw, and DIA Diagram Editor.