Lucidchart

Freemium

Lucidchart is a web-based application to draw diagrams.

yEd Graph Editor

Free

yEd is a free general-purpose diagramming program with a multi-document interface.

LibreOffice - Draw

Open Source

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

PlantUML

Open Source

PlantUML is an open-source tool allowing users to create UML diagrams from a plain text language.

SmartDraw

Commercial

SmartDraw is the smartest way to draw any type of chart, diagram: flowcharts, org charts, floor plans, network diagrams, and more.

Diagram Designer

Free

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

ProcessMaker

Freemium

ProcessMaker is an Open source web-based workflow software and Business Process Management software.

Diagrammix

Commercial

Diagrammix is a tool for efficiently building attractive diagrams and flowcharts.

Dia

Open Source

Dia is free and open source drawing software.

Microsoft Office Visio

Commercial

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

Apache OpenOffice Draw

Open Source

Apache OpenOffice Draw. Makes drawing business processes and diagrams a snap! Draw - from a quick sketch to a complex plan, Draw gives you the tools to commun…

Google Drive - Drawings

Free

Google Drawings is a free, web-based diagramming software developed by Google.

Edraw Max

Commercial

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