IcePanel
draw.io
LucidChart
Terrastruct
PlantUML
Cloudcraft
OmniGraffle
Structurizr is a workspace editor that creates software architecture diagrams and documentation based on the C4 model.

Exam.net
StudySpaces is a white-label tutoring and test prep platform with built-in SAT, ACT, etc. curriculum, auto-graded mock exams, and a branded student portal.

Which is more popular?
Based on our record, Structurizr seems to be more popular. It has been mentioned 8 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | structurizr.org | studyspaces.com |
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What each product offers, as listed by its team.

Possible disadvantages
No features have been listed yet.
Walkthroughs and reviews on video.
Simon Brown: C4 Architecture Model and Structurizr
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How often each product is chosen within a category, 0–100% relative to the other.

Share your experience with using Structurizr and StudySpaces. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.

Structurizr builds upon “diagrams as code”, allowing you to create multiple diagrams from a single model using a number of tools and programming languages.
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Recommendations tracked on public social media and blogs since March 2021.

You are welcome! It’s a nice way of breaking down problems. You can go one step further and generate them from code using something like Structurizr (https://structurizr.org/) if you want to get fancy. Source: over 3 years ago
Regarding documentation, I created the C4 model for visualising software architecture as a way to introduce some structure into architecture diagrams, because even today most of what I see is still ad hoc boxes and arrows, with little... Source: over 3 years ago
Would love to see a comparison to structurizr, which is a higher level dsl that essentially renders to any of the other three you're comparing. Source: almost 4 years ago
Tracking StudySpaces since Nov 2026.
When comparing Structurizr and StudySpaces, you can also consider the following products.

Collaborative modelling and diagramming tool based on the C4 model. Software architecture design made fun! 🧊
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A platform for creating and conducting exams and assessments.
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LucidChart is the missing link in online productivity suites. LucidChart allows users to create, collaborate on, and publish attractive flowcharts and other diagrams from a web browser.
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A diagramming tool for software architecture
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PlantUML is an open-source tool that uses simple textual descriptions to draw UML diagrams.
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