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Scalar API Client vs Apidog: catalog facts
Scalar API Client	Apidog
Freemium The open-source client is free; the wider Scalar platform has commercial offerings.	Freemium Free to start, with paid tiers for teams.
Web	Web, Browser extension
Understands OpenAPI descriptions Open source on GitHub	Design, debugging, mocking and testing in one tool Available as both a desktop and a web client
The website focuses on the commercial docs and SDK platform rather than the client Most useful when an OpenAPI description exists	Closed source Broader and heavier than a simple request sender
Web application	Downloadable app, Web application, Browser extension
Open source	Closed source
License not stated	License not stated
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 23, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.