Top Alternatives to Calligra Flow

Lucidchart is a web-based application to draw diagrams.

Dia is free and open source drawing software.

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

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

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

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 communicate with graphics and diagrams. With a maximum page size of 300cm by 300cm, Draw is powerful tool for technical or general posters, etc.

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

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

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

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

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

VisiTouch helps you view and convert to PDF your MS Visio diagrams for iPhone.

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

Nevron Draw is a software for creating flowcharts and diagrams.

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