Adobe XD is a commercial vector user experience design tool for designing web apps and mobile apps

Balsamiq Mockups is a rapid wireframing tool that helps you Work Faster & Smarter.

Diagram Designer is a vector graphics editor that allows you to create UML class diagrams, illustrations, flowcharts and slide shows.

Diagramo is an online flowchart software. It's FREE and Open Source ( GPL ) It's pure HTML5 Share and collaborate.

Figma is a collaborative interface design tool.

LibreOffice is a full-featured office productivity suite that provides a near drop-in replacement for Microsoft Office.

Axure RP is a wireframing, rapid prototyping, documentation and specification software tool aimed at web and desktop applications.

ConceptDraw PRO is diagramming software used to create business graphics, including ConceptDraw Flowcharting Suite.

draw.io is free online diagram software for making flowcharts, process diagrams, etc

Edraw Max is comprehensive mind mapping and planning tool network diagrams, floor plans, workflow diagrams, business charts, and engineering diagrams.

Gliffy is software for diagramming via a HTML5 cloud-based app. It is used to create UML diagrams, floor plans, Venn diagrams, flowcharts and various other ki…

Microsoft Visio (formerly Microsoft Office Visio) is a diagramming and vector graphics application and is part of the Microsoft Office family.