Structurizr
Structurizr: A deep architecture-as-code tool for teams that need versioned C4 documentation at scale. Ranked #18 of 36 in Diagram Software by our editors (7.4/10); pricing: Free plan · 14-day trial; best for architecture-as-code documentation at scale.
At a glance
- Editor score7.4 / 10
- PricingFree plan · 14-day trial
- Best forArchitecture-as-code documentation at scale
- Free planYes
- Paid from£300/mo
- Facts checked20 Sep 2026
Where it wins
- Deep C4 modeling with multiple architecture diagram types
- DSL, APIs, branches, locking, and retained workspace versions
- Exports to PlantUML, Mermaid, images, JSON, and static HTML
Where it doesn't
- Paid server plans start at £300 per month with annual billing
- No real-time collaboration or desktop application
- Structurizr cloud service is scheduled to end on 30 September 2026
Our verdict on Structurizr
Structurizr is a models-as-code tool for software architecture diagrams built around the C4 model. Developers, software architects, engineering teams, and stakeholders can define a single architecture model in Structurizr DSL, then generate system landscape, system context, container, component, dynamic, deployment, filtered, custom, and image views. Browser viewing, manual and automatic layout, interactive diagrams, Markdown or AsciiDoc documentation, and architecture decision record rendering support both technical documentation and stakeholder communication.
Its strongest fit is a version-controlled architecture workflow. Workspace APIs support pushing and pulling JSON workspaces, while branches, locking, and retained server versions provide governance for shared models. Git, AWS, Azure, Google Cloud Platform, Oracle Cloud Infrastructure, Kubernetes, PlantUML, C4-PlantUML, Mermaid, and WebSequenceWebDiagrams integrations extend the workflow. Exports include PlantUML, C4-PlantUML, Mermaid, WebSequenceWebDiagrams, PNG, SVG, JSON, static HTML, and theme JSON. MCP and AI-oriented DSL validation, parsing, and inspection tools add support for automated architecture workflows.
The free local edition, browser-based playground, export utilities, and self-hosted server tooling give teams several ways to work with Structurizr. Paid server plans are priced per Structurizr server installation by annual unique-user tier: Small is £300 per month for 1–20 users, Medium £600 for 21–50, Large £900 for 51–100, and Enterprise tiers range from £1,200 to £2,400 for 101+ users. That structure suits organizations standardizing architecture documentation across teams, but it is a specialized, high-cost choice. Teams wanting real-time collaboration, a desktop app, or a continuing cloud service should choose an alternative.
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Structurizr pricing
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Structurizr fact sheet
| Free plan | Yes |
|---|---|
| Paid from | £300/mo |
| Diagram types | system landscape, system context, container, component, code, dynamic, deployment, custom, filtered, image |
| Real-time collaboration | Not verified |
| Export formats | PlantUML, C4-PlantUML, Mermaid, WebSequenceDiagrams, static HTML, PNG, SVG, JSON, theme |
| Import formats | Structurizr DSL, Structurizr JSON |
| Desktop app | Not verified |
| Version history | Yes |
| Maximum editors | Not verified |
| Free trial | 14 days |
| Deployment | Cloud, Self-hosted |
| Platforms | Web |
| Support | Community, Docs |
| Built for | Small business, Mid-market, Enterprise (editorial estimate) |
| Pricing | Free plan · 14-day trial (source) |
| Website | structurizr.com |
| Facts checked | 20 Sep 2026 |
Alternatives to Structurizr
- draw.ioA broad, flexible diagramming editor for teams that want free cross-platform coverage.9.4
- Visual ParadigmA broad modeling suite with collaboration, engineering tools, and a free plan.9.2
- LucidchartA broad, collaborative diagramming workspace with a free tier and web-only access.9.0
See all Structurizr alternatives →
Also Ranked In
Structurizr is ranked in 2 of our directories.
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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