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Apidog vs Scalar API Client: catalog facts
Apidog	Scalar API Client
Freemium Free to start, with paid tiers for teams.	Freemium The open-source client is free; the wider Scalar platform has commercial offerings.
Web, Browser extension	Web
Design, debugging, mocking and testing in one tool Available as both a desktop and a web client	Understands OpenAPI descriptions Open source on GitHub
Closed source Broader and heavier than a simple request sender	The website focuses on the commercial docs and SDK platform rather than the client Most useful when an OpenAPI description exists
Downloadable app, Web application, Browser extension	Web application
Closed source	Open 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.