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