Top Alternatives to Visual Paradigm

Lucidchart is a web-based application to draw diagrams.

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

Dia is free and open source drawing software.

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

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

StarUML is an opensource UML tool.

Grafio is a fun and capable diagraming app for iOS with plenty of features at a fraction of the cost of others.

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

Umbrello UML Modeller is a free software UML diagram tool available natively for Unix-like platforms and Windows.

Enterprise Architect is a visual modeling and design tool based on the OMG UML.

UMLet is an open-source Java-based UML tool designed for teaching the Unified Modeling Language and for quickly creating UML diagrams.

Software Ideas Modeler is a CASE and an UML tool.

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.

Astah Community is a free software design tool which supports the latest UML diagrams.

Nevron Draw is a software for creating flowcharts and diagrams.

Modelio is an Open Source UML tool.

WhiteStarUML is a UML modeling tool.