Microsoft Visio 2021 Pro is a user-friendly design app that helps you turn data into simple, clean visual diagrams, and a lifetime license is only $17.97 (usually $249) during this limited-time sale.

With Visio Professional 2021, Microsoft gives you an all-in-one tool for turning complex ideas into clear visuals using a massive library of over 250,000 shapes and customizable templates.

ConceptDraw Viewer 2.0, CS Odessa's free file opening and printing utility for its ConceptDraw line of diagramming and drawing applications, now supports Visio XML documents.