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Diagramming APIs
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Popular first highlights editorial picks, then ranks providers by monthly downloads of their official SDKs on npm and PyPI (measured 2026-10-18). Others follow A–Z.
Cacoo
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Creately
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Microsoft Visio
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Structurizr
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Whimsical
View API profileCounts reflect unique named profiles assigned to this category. Documentation and integration details vary by provider.