Diagrams.net
Diagrams.net — Free web-based diagram editor (draw.io) supporting architecture, flowchart, and UML diagram creation.
Our Verdict
The unbeatable free diagramming tool for engineers—especially for architecture and flowcharts.
Pros
- Free forever with no account required
- Desktop, browser, and VS Code versions
- Huge shape library for architecture
- Integrates with Google Drive, GitHub
Cons
- UI isn't as polished as Lucidchart
- Real-time collab weaker than Figma/Lucid
- Large diagrams can get sluggish
- No native AI features
Best for: Engineers drawing architecture and sequence diagrams without vendor lock-in
Not for: Design teams wanting real-time multi-cursor collaboration like Figma
When to Use Diagrams.net
Good fit if you need
- Architecture diagrams for technical documentation
- Flowchart creation for business process documentation
- UML class diagrams for software design review
- Free draw.io alternative to paid diagramming tools
- Embedded diagram editor in wiki or documentation site
Lock-in Assessment
Low 5/5
Lock-in Score 5/5
Pricing
Price wrong?Diagrams.net Pricing
- Pricing Model
- free
- Free Tier
- Yes
- Entry Price
- —
- Enterprise Available
- No
- Transparency Score
- —
Beta — estimates may differ from actual pricing
1,000
1001K10K100K1M
Estimated Monthly Cost
$25
Estimated Annual Cost
$300
Estimates are approximate and may not reflect current pricing. Always check the official pricing page.
Community Discussion
Comments powered by Giscus (GitHub Discussions). You need a GitHub account to comment.