Merit Modeler
FREEdiagramming tool for creating
flowcharts, data
flow, use case & other diagrams
Completely FREE data modeling tool
Merit Modeler is a free desktop diagramming tool for creating Flowcharts, Use Case and Data Flow diagrams. It helps you visualize processes, document software systems and communicate ideas clearly. Because it runs locally on your computer, it is fast, secure and fully available offline — no subscriptions, no online accounts.
Think clearly. Design smarter.
In today's AI-driven world, clear thinking matters. It is essential to define requirements, map processes, and structure workflows. Diagrams are one of the best ways to capture and share that knowledge.
With Merit Modeler you can create:
- flowcharts
- use-case diagrams
- data-flow diagrams
Keep your diagrams and insights safely in your hands.
Flexible Visual Representation
Switch between graphics view and card view for every object. Present structure clearly or focus on content.
Card view is ideal for cases where text is difficult to fit into a graphic object, such as a decision object in a flowchart diagram, etc.
Smart Line Connectors with Manual Control
Automatic line anchor points save time and when precision matters, you can manually select the anchor side for perfect diagram layout.
Themes & Custom Styling
Change the look of your diagrams instantly with dark, white or handwritten themes. Customize colors for graphics and objects to keep your models readable and visually consistent.
Notes with Markdown Support
Add rich descriptions, tables and selected HTML tags to keep analysis, documentation and diagrams together in one place.
Designed for Organized Modeling
Organize complex diagrams with Subject Areas, Swim Pools and Swim Lanes — ideal for process modeling, system design and analysis.
Completely FREE data modeling tool
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Meteor ModelerCzech Republic
European Union
ID No. 175 96 041
TAX ID No. CZ 175 96 041
