How many companies use C3.js vs Substack?

1,940 companies use C3.js and 359 companies use Substack in our database. C3.js is more widely adopted with 5.4x more companies than Substack.

Can I get a list of companies using both C3.js and Substack?

Yes. AgentData tracks companies using both tools. Sign up free to access the full list with emails, tech stacks, and contacts via CSV or API.

C3.js is used by 1,940companies — 5.4x more than Substack (359).

1,940 use C3.js359 use Substack

	C3.js	Substack
Companies	1,940	359
Category	JavaScript libraries	Blogs

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2,299 companies with emails, tech stacks, and contacts

1,000 lookups · API access · CSV exports

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GET /api/v1/tech?name=c3-js

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