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Draw.ioRun Projects & Operations

STOA rating

7.6 / 10

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Pricing

Free plan availableFree plan

What it does

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Free, open-source diagramming tool. Create flowcharts, process maps, network diagrams in your browser. Files stay in your own storage — never on third-party servers.

Strengths

Completely free with no usage limits
Files stored in your own Google Drive, OneDrive, or locally — not on third-party servers
Works entirely in the browser with no software to install
Wide variety of diagram types including flowcharts, network diagrams, and org charts
Open-source with a large community and regular updates

Weaknesses

Interface feels dated compared to modern paid alternatives
Real-time collaboration is limited compared to tools like Lucidchart or Miro
Fewer polished templates than premium diagramming tools
No built-in AI features to help generate or suggest diagrams

Key features

Create flowcharts, process maps, org charts, and network diagrams in your browser
Save files directly to Google Drive, OneDrive, Dropbox, or your local computer
Completely free and open-source with no subscription required
Share diagrams with your team for review and basic collaboration
Export diagrams as PNG, PDF, SVG, or XML files
Integrates with Confluence and Jira for teams using Atlassian tools

STOA verdict

Draw.io is a great pick if you need to create flowcharts, org charts, or process maps without paying for software. It's completely free and your files stay on your own Google Drive or computer — not on some company's server. The only real downside is that it lacks the polished templates and real-time collaboration features you'd get from paid tools like Lucidchart.