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Kreya vs grpcui: catalog facts
Kreya	grpcui
Freemium A free tier is available. Advanced features require a paid licence.	Free Free and open source under the MIT licence.
Windows, macOS, Linux	Web, Command line
One of the few desktop clients with proper gRPC and server reflection support Projects are Git-friendly local files rather than cloud documents	Browser forms for calling gRPC methods Postman-style workflow for gRPC rather than REST
Some features require a paid licence Smaller community than the mainstream API clients	Covers gRPC only, not REST or GraphQL Launched from the command line rather than as a desktop app
Downloadable app	Downloadable app
Closed source	Open source
License not stated	License: MIT
Not stated if an account is needed	No account needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 22, 2026	Official website Full listing and sources Checked September 23, 2026

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