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Hello HTTP vs Kreya: catalog facts
Hello HTTP	Kreya
Free Free and open source under the Apache 2.0 licence.	Freemium A free tier is available. Advanced features require a paid licence.
Windows, macOS, Linux	Windows, macOS, Linux
Supports HTTP, WebSocket, GraphQL subscriptions and gRPC Desktop app rather than a cloud service	One of the few desktop clients with proper gRPC and server reflection support Projects are Git-friendly local files rather than cloud documents
Built mainly around one developer's needs Smaller ecosystem than Postman or Insomnia	Some features require a paid licence Smaller community than the mainstream API clients
Downloadable app	Downloadable app
Open source	Closed source
License: Apache-2.0	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 October 2, 2026	Official website Full listing and sources Checked September 22, 2026

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