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Hello HTTP vs API Dash: catalog facts
Hello HTTP	API Dash
Free Free and open source under the Apache 2.0 licence.	Free Free and open source.
Windows, macOS, Linux	Windows, macOS, Linux
Supports HTTP, WebSocket, GraphQL subscriptions and gRPC Desktop app rather than a cloud service	Generates client code in several languages Previews 40+ response media types
Built mainly around one developer's needs Smaller ecosystem than Postman or Insomnia	Younger project than established API clients No browser or mobile version
Downloadable app	Downloadable app
Open source	Open source
License: Apache-2.0	License not stated
Not stated if an account is needed	No account needed
Not stated if it works offline	Works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 2, 2026

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