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6+ Diagramming Tools

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Diagrimo

freemium

Diagrimo is an AI diagram generator that turns text into visual diagrams such as flowcharts, mind maps, and infographics in seconds. It helps users quickly visualize ideas for presentations, planning, education, and content creation.

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Mindomo

Mindomo

freemium

Mindomo offers a cross-platform mind mapping and diagramming tool with real-time collaboration, AI-powered brainstorming and content refinement, multimedia attachments, task management, and extensive export/import options. It supports offline editing, version history, and integrations with educational and business apps

Diagramming
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PlantUML

freemium

PlantUML enables users to create UML and various other diagrams using a straightforward text-based language, supporting multiple diagram types and export formats. It operates as a diagram generator with smart layout algorithms and high customizability.

Diagramming
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draw.io

draw.io

freemium

Draw.io is a free, open source diagramming application used by over 100 million users worldwide. It supports professional diagramming with backwards compatibility, real-time collaboration, and native integrations with popular platforms. Users retain full control over data storage with privacy-first design.

Diagramming
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Moqups

Moqups

freemium

Moqups is a browser-based application that enables teams to design wireframes, mockups, diagrams, and interactive prototypes in a single environment. It supports real-time collaboration, cloud access, and integrates with tools like Slack, Google Drive, and Dropbox.

Diagramming
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gliffy

gliffy

paid

Gliffy enables users to create, collaborate on, and share diagrams such as flowcharts, UML, and organizational charts directly within Atlassian Confluence and Jira environments. It offers drag-and-drop editing, AI-assisted diagram generation, and compliance-ready options for regulated industries.

Diagramming
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MockFlow

MockFlow

freemium

MockFlow is a visual collaboration tool for wireframing, brainstorming, and UI design that integrates AI to generate wireframes, diagrams, and content. It supports team collaboration with chat, video meetings, and integrations across platforms.

Diagramming

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Frequently asked questions

How many Diagramming tools are there?

Siteefy's live index currently tracks 7 Diagramming tools, with 7 added in 2026. The count updates automatically as tools are published or retired.

Are there free Diagramming tools?

Yes. 6 offer a free plan alongside paid tiers.

How is this Diagramming list ordered?

Boosted listings appear first, then the most reviewed tools, then the most saved and highest rated. Star ratings come from community reviews, and anyone can review a tool or suggest one that is missing.