Diagrams.net

Name: Diagrams.net
Brand: Draw.io
Rating: 3.6 (243 reviews)

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Free, secure diagramming for flowcharts, UML, and more

Diagramming Productivity UI/UX Design

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3.6(243 across the web)

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Reviews onCapterraSourceForge

243 reviews tracked

The Bottom Line

Entry price

Free, no paid tier

Biggest pro

Completely free for individual use with no feature restrictions

Biggest con

Atlassian integration (Confluence/Jira) requires a paid license

TL;DR - Diagrams.net

Free, open-source diagramming tool for flowcharts, UML, ERD, network diagrams, and more
No login required, works in browser or as a desktop app with flexible storage options
Paid only for Atlassian Confluence/Jira integration; individual use is completely free

Pricing: Free forever

Best for: Individuals & startups

3.6/5 across review platforms

What is Diagrams.net?

Editorial review

Diagrams.net (also known as draw.io) is a free, open-source diagramming tool for creating flowcharts, network diagrams, UML, ERD, BPMN, and architectural drawings. It runs in the browser with no login required, stores files wherever you choose (Google Drive, OneDrive, GitHub, locally), and offers a desktop app for offline use. The tool emphasizes security-first design with no vendor data access, real-time collaboration, and AI-powered diagram generation, all at zero cost for individual use.

Available on: Web, Chrome

LCLouis CorneloupUpdated Jul 20, 2026 · how we evaluateSourcediagrams.net ↗

Pros & Cons

Pros

Completely free for individual use with no feature restrictions
No account or login required, instant access via browser
Open-source with transparent security and self-hosting option
Files stored in your own cloud or locally, no vendor lock-in
Broad diagram type support from flowcharts to cloud architecture
Active development with modern features like AI generation and real-time collaboration

Cons

Atlassian integration (Confluence/Jira) requires a paid license
UI feels utilitarian compared to polished competitors like Lucidchart or Miro
Real-time collaboration is newer and less mature than dedicated whiteboard tools
No built-in presentation mode or slide deck export
Limited template gallery compared to commercial diagramming tools

Ratings Across the Web

3.6(243 reviews)

Capterra2 reviews

4/5

SourceForge241 reviews

3.5/5

What people say

“I love that draw.io can be used entirely for free, there are no diagram types nor crucial diagramming features that are locked behind a paywall.”via Capterra

“The only thing that is annoying is the “Layers” panel cannot be docked to a sidebar which means you have to open it every time you open a file and resize it which becomes annoying.”via SourceForge

Ratings aggregated from independent review platforms. Learn more

Key Features

Free browser-based diagramming with no login or registration requiredFlowcharts, UML, ERD, BPMN, network, and architecture diagram supportReal-time collaboration with shared cursorsAI-powered diagram generation via OpenAI integrationStorage flexibility: Google Drive, OneDrive, Dropbox, GitHub, GitLab, or localDesktop app for Windows, macOS, and Linux (offline capable)Atlassian Confluence and Jira integration (paid add-on)VSCode extension for developer workflowsExtensive shape libraries including AWS, Azure, GCP, and Cisco iconsOpen-source under Apache 2.0 license with self-hosting option

Pricing

Free

Diagrams.net is completely free to use with no hidden costs.

View pricing

Is Diagrams.net worth the price?

95/100

The 'Individual Use' plan for Diagrams.net is exceptionally generous, offering a full-featured diagramming tool completely free of charge.

This makes it an outstanding value for individual users and small teams. The paid Atlassian integrations are priced competitively within that ecosystem, making it ideal for organizations already invested in Atlassian products.

Hidden Costs & Gotchas

Atlassian marketplace fees are per-user

No free tier for Atlassian integrations

Enterprise support only with paid Atlassian plans

How Diagrams.net Compares to Competitors

Compared to Lucidchart, which starts at $7.95/user/month for basic features, Diagrams.net's free individual offering is vastly superior in value. Even for Atlassian integrations, Diagrams.net is often more cost-effective than dedicated diagramming tools that charge per-user, per-month for similar functionality within the Atlassian ecosystem.

Reviews

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3.6/5

Across 243 verified user reviews on SourceForge, Capterra

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Best Diagrams.net Alternatives

Top alternatives based on features, pricing, and user needs.

View full list →

MiroFreemium

Visual collaboration for distributed teams

4.6

LucidchartFreemium

Create and collaborate on any diagram, from flowcharts to technical designs

4.5

VisioPaid

Create professional diagrams, flowcharts, and designs

4.4

CreatelyFreemium

Visual collaboration workspace

4.4

draw.ioFree

Free, open-source diagramming for any use case

4.5

OmniGrafflePaid

Precision diagramming for Mac and iOS professionals

4.3

SmartDrawPaid

Create any diagram, from floor plans to flowcharts, without CAD

4.2

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Still deciding?

Most buyers shortlist 2 or 3 tools before committing. Pull a side-by-side comparison or browse the full alternatives shortlist below.

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Diagrams.net FAQ

How does Diagrams.net support different diagram types?

Diagrams.net offers broad support for various diagram types, including flowcharts, network diagrams, UML, ERD, BPMN, and architectural drawings. This allows users to create a wide range of visual representations for different needs.

What kind of user benefits most from Diagrams.net?

Diagrams.net is ideal for individual users who need a free, secure, and versatile diagramming tool without vendor lock-in. It suits those who prioritize data ownership and require support for many diagram types.

How is Diagrams.net priced?

Diagrams.net is free to use for individual users, requiring no paid plan to access its full features. There are no feature restrictions for individual use.

Can Diagrams.net integrate with Atlassian products like Confluence or Jira?

While Diagrams.net can integrate with Atlassian products such as Confluence and Jira, this functionality requires a paid license. The core individual use of the tool remains free.

How does Diagrams.net compare to Lucidchart regarding user interface?

Compared to Lucidchart, Diagrams.net's user interface is often described as more utilitarian. While functional, it may feel less polished than some commercial competitors.

What are the storage options for diagrams created with Diagrams.net?

Diagrams.net allows users to store their files wherever they choose, including cloud services like Google Drive, OneDrive, and GitHub, or locally on their device. This provides flexibility and prevents vendor lock-in.

Does Diagrams.net offer real-time collaboration features?

Yes, Diagrams.net includes real-time collaboration capabilities, allowing multiple users to work on diagrams simultaneously. This feature is actively developed, though it is newer compared to dedicated whiteboard tools.

Source: diagrams.net

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