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View detailsdiagrams.net
Free open-source diagram editor for flowcharts, UML, and network maps.
diagrams.net is a free, open-source diagram editor for flowcharts, UML, and network maps. It runs entirely in the browser or as a desktop app, with no account needed: open it, pick a template, drag shapes onto the canvas, and save your diagram to your computer, Google Drive, or GitHub.
Key Features
- Free diagram editor in the browser or desktop
- Flowcharts, UML, network, and org charts
- Save to Google Drive, GitHub, or locally
- Export to PNG, SVG, and PDF
- Works offline with no account
- Shape libraries for many diagram types
Pricing
| Plan | Price | Details |
|---|---|---|
| Free | $0 | Free open source editor; no paid tier and no account required. |
Prices as listed in 2026 research. Always check the official site for the latest price — plans change. Free plan: Yes — it has a free plan.
Best for: anyone who needs a free diagram editor with no account and no limits.
Popular with: Developers, Business Owners, Teachers
Popular with: Developers, Business Owners, Teachers
How it works
The tool — formerly known as draw.io — is popular with developers and engineers because it is fast, private, and free forever. Diagrams are stored as XML files you control, so nothing is locked in a vendor's cloud. It includes shapes for UML, network diagrams, flowcharts, org charts, and wireframes, with export to PNG, SVG, and PDF.
diagrams.net costs nothing and has no paid tier. The interface is plain and there is no live collaboration, but for individual diagramming it is hard to argue with: a capable, private, free editor that works offline and respects your files.
Pros and Cons
✓ Pros
- Completely free with no limits
- Private — your files stay yours
- Works offline in the browser
- Good shape libraries for technical diagrams
✗ Cons
- Interface is functional rather than beautiful
- No real-time collaboration
- Fewer templates than paid diagramming tools
Frequently Asked Questions
Is diagrams.net free?
Yes — diagrams.net has a free plan. Free open source
What is diagrams.net best for?
anyone who needs a free diagram editor with no account and no limits.
What kind of tool is diagrams.net?
diagrams.net is a Design Tools tool on VerlumoAI.
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View detailsLast reviewed: November 2026