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Structurizr alternatives: 5 apps ranked by verified data

Facts checked Oct 25, 2026AppBreakup editorialHow we rank

Common reasons people leave Structurizr: only for software architecture diagrams, and DSL has a learning curve. We ranked 5 alternatives by how directly each one replaces Structurizr, then by reviews, real visits and how recently each app's facts were checked against its own website. IcePanel currently ranks first.

Quick comparison

#AppPricingOpen sourcePlatformsVerified factsScore
1IcePanel logoIcePanelFree plan + paidNoWeb4 of 466.5
2Ilograph logoIlographFree plan + paidNoWeb, Windows, macOS +14 of 462.6
3D2 logoD2Open sourceYesWindows, macOS, Linux +15 of 559.6
4PlantUML logoPlantUMLOpen sourceYesWeb, Windows, macOS +24 of 457.2
5Archi logoArchiOpen sourceYesWindows, macOS, Linux4 of 455.3
  1. IcePanel logo

    1. IcePanelTop pick

    Best for: Engineering teams who want a shared, living model of their software architecture

    Free plan + paidWeb

    66.5

    score / 100

    Why switch from Structurizr

    A visual, collaborative C4 modelling tool if your team prefers clicking to writing DSL.

    Pros

    • One model drives many consistent C4 diagrams
    • Interactive zooming and flows for explaining systems
    • Visual editor, no DSL to learn
    • REST API for automation

    Cons

    • Free plan allows only one editor
    • Per-editor pricing is high for larger teams
    • Focused only on software architecture
    Visit IcePanel Details and reviews
    How this score is calculated
    Editorial fit ×0.3100
    Reviews ×0.363
    Clicks (90 days) ×0.150
    Freshness ×0.1585
    Votes ×0.150

    0 counted reviews, 0 up and 0 down votes. Full formula

    Is IcePanel a good Structurizr alternative?

    Verified facts

    4 of 4 verified
    Free plan
    1 editor
    Checked Oct 25, 2026icepanel.io(opens source in a new tab)
    Growth price
    $40 per editor/month, billed annually
    Checked Oct 25, 2026icepanel.io(opens source in a new tab)
    Free trial
    14 days on Growth, no card
    Checked Oct 25, 2026icepanel.io(opens source in a new tab)
    API
    REST API
    Checked Oct 25, 2026icepanel.io(opens source in a new tab)
  2. Ilograph logo

    2. Ilograph

    Best for: Engineers explaining large distributed systems to different audiences

    Free plan + paidWeb, Windows, macOS, Linux

    62.6

    score / 100

    Why switch from Structurizr

    Interactive architecture diagrams as code with zoomable perspectives.

    Pros

    • Multiple perspectives from one model
    • Interactive zooming and sequence walkthroughs
    • Autocomplete in the diagram editor
    • Offline desktop and Confluence options

    Cons

    • Interactive diagrams lose value when exported as images
    • YAML-style language has a learning curve
    • Team plans priced per editor
    Visit Ilograph Details and reviews
    How this score is calculated
    Editorial fit ×0.387
    Reviews ×0.363
    Clicks (90 days) ×0.150
    Freshness ×0.1585
    Votes ×0.150

    0 counted reviews, 0 up and 0 down votes. Full formula

    Is Ilograph a good Structurizr alternative?

    Verified facts

    4 of 4 verified
    Free plan
    $0 per month
    Checked Oct 25, 2026ilograph.com(opens source in a new tab)
    Deployment options
    Online, on-prem desktop, Confluence Cloud
    Checked Oct 25, 2026ilograph.com(opens source in a new tab)
    Editor
    Full autocomplete, instant updates
    Checked Oct 25, 2026ilograph.com(opens source in a new tab)
    Built-in icons
    AWS, Azure, GCP
    Checked Oct 25, 2026ilograph.com(opens source in a new tab)
  3. D2 logo

    3. D2

    Best for: Developers who want diagrams as code with more layout and styling control than Mermaid

    Open sourceWindows, macOS, Linux, Web

    59.6

    score / 100

    Why switch from Structurizr

    A general diagram language for when you need more than C4 views.

    Pros

    • Clean default output with themes and custom fonts
    • Multiple layout engines to choose from
    • Offline CLI with live-reload watch mode
    • Modular diagrams through imports

    Cons

    • Not rendered natively on GitHub
    • Smaller ecosystem than Mermaid or PlantUML
    • Still needs a CLI or plugin to render
    Visit D2 Details and reviews
    How this score is calculated
    Editorial fit ×0.377
    Reviews ×0.363
    Clicks (90 days) ×0.150
    Freshness ×0.1585
    Votes ×0.150

    0 counted reviews, 0 up and 0 down votes. Full formula

    Is D2 a good Structurizr alternative?

    Verified facts

    5 of 5 verified
    License
    MPL-2.0
    Checked Oct 25, 2026github.com(opens source in a new tab)
    Platforms
    macOS, Linux, Windows
    Checked Oct 25, 2026d2lang.com(opens source in a new tab)
    Project
    Independent, fiscally sponsored by Hack Club
    Checked Oct 25, 2026d2lang.com(opens source in a new tab)
    CLI
    Local CLI with watch mode
    Checked Oct 25, 2026d2lang.com(opens source in a new tab)
    Custom fonts
    Your own .ttf files
    Checked Oct 25, 2026d2lang.com(opens source in a new tab)
  4. PlantUML logo

    4. PlantUML

    Best for: Engineers documenting software with UML diagrams kept as text in the repo

    Open sourceSelf-hostableWeb, Windows, macOS, Linux, Self-hosted

    57.2

    score / 100

    Why switch from Structurizr

    Has a C4 extension and covers UML too, in one text format.

    Pros

    • Very broad UML coverage
    • Plugins for most IDEs and documentation tools
    • Can be self-hosted as a rendering server
    • Free and open source

    Cons

    • Default visual style looks dated
    • Local use needs Java installed
    • Syntax has many inconsistencies between diagram types
    Visit PlantUML Details and reviews
    How this score is calculated
    Editorial fit ×0.369
    Reviews ×0.363
    Clicks (90 days) ×0.150
    Freshness ×0.1585
    Votes ×0.150

    0 counted reviews, 0 up and 0 down votes. Full formula

    Is PlantUML a good Structurizr alternative?

    Verified facts

    4 of 4 verified
    Open source
    Yes
    Checked Oct 25, 2026plantuml.com(opens source in a new tab)
    License
    LGPL-3.0 (repo); GPL and other builds offered
    Checked Oct 25, 2026github.com(opens source in a new tab)
    Licensing options
    Several licences, GPL build is most complete
    Checked Oct 25, 2026plantuml.com(opens source in a new tab)
    In-browser rendering
    JavaScript rendering engine
    Checked Oct 25, 2026plantuml.com(opens source in a new tab)
  5. Archi logo

    5. Archi

    Best for: Enterprise architects and students working in ArchiMate on a budget

    Open sourceWindows, macOS, Linux

    55.3

    score / 100

    Why switch from Structurizr

    Open-source enterprise architecture modelling in ArchiMate instead of C4.

    Pros

    • Free and open source
    • Validates ArchiMate relationships as you model
    • Runs on Windows, macOS and Linux
    • Scripting and Git collaboration plug-ins

    Cons

    • Supports ArchiMate only
    • No built-in multi-user repository
    • Eclipse-based interface feels heavy
    Visit Archi Details and reviews
    How this score is calculated
    Editorial fit ×0.363
    Reviews ×0.363
    Clicks (90 days) ×0.150
    Freshness ×0.1585
    Votes ×0.150

    0 counted reviews, 0 up and 0 down votes. Full formula

    Is Archi a good Structurizr alternative?

    Verified facts

    4 of 4 verified
    Open source
    Yes
    Checked Oct 25, 2026archimatetool.com(opens source in a new tab)
    License
    MIT
    Checked Oct 25, 2026github.com(opens source in a new tab)
    Platforms
    Windows, macOS, Linux
    Checked Oct 25, 2026archimatetool.com(opens source in a new tab)
    macOS requirement
    macOS 11 or later
    Checked Oct 25, 2026archimatetool.com(opens source in a new tab)

The best Structurizr alternative for…

The highest-ranked app in this list for each need.

IcePanel logo

Best Structurizr alternative for most people

IcePanel

A visual, collaborative C4 modelling tool if your team prefers clicking to writing DSL.

D2 logo

Best Structurizr alternative for a free option

D2

A general diagram language for when you need more than C4 views.

Ilograph logo

Best Structurizr alternative for a free plan you can upgrade

Ilograph

Interactive architecture diagrams as code with zoomable perspectives.

PlantUML logo

Best Structurizr alternative for open source

PlantUML

Has a C4 extension and covers UML too, in one text format.

PlantUML logo

Best Structurizr alternative for self-hosting

PlantUML

Has a C4 extension and covers UML too, in one text format.

Archi logo

Best Structurizr alternative for Mac

Archi

Open-source enterprise architecture modelling in ArchiMate instead of C4.

Ilograph logo

Best Structurizr alternative for Windows

Ilograph

Interactive architecture diagrams as code with zoomable perspectives.

Ilograph logo

Best Structurizr alternative for Linux

Ilograph

Interactive architecture diagrams as code with zoomable perspectives.

IcePanel logo

Best Structurizr alternative for working in the browser

IcePanel

A visual, collaborative C4 modelling tool if your team prefers clicking to writing DSL.

Structurizr alternatives: common questions

What is the best alternative to Structurizr?

IcePanel ranks first right now. A visual, collaborative C4 modelling tool if your team prefers clicking to writing DSL. Ilograph and D2 follow it in our ranking.

Is there a free alternative to Structurizr?

Yes. IcePanel (free plan + paid), Ilograph (free plan + paid), D2 (open source) and PlantUML (open source) have a free option. Check each app's verified facts for current plan limits.

Is there an open-source alternative to Structurizr?

Yes: D2, PlantUML and Archi. PlantUML can also be self-hosted.

Which Structurizr alternatives work on Linux?

Ilograph, D2, PlantUML and Archi run on Linux.

Why do people switch from Structurizr?

The complaints we hear most: only for software architecture diagrams; DSL has a learning curve; server edition binaries need a paid licence.

How is this list ranked?

Every app is scored with the same published formula: how directly it replaces Structurizr, reviews (weighted by verification), visits from AppBreakup, how recently its facts were checked against its own website, and reader votes.