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grpcui vs Chiko: catalog facts
grpcui	Chiko
Free Free and open source under the MIT licence.	Free Free and open source under the MIT license.
Web, Command line	Command line
Browser forms for calling gRPC methods Postman-style workflow for gRPC rather than REST	Discovers endpoints using gRPC server reflection Generates request templates
Covers gRPC only, not REST or GraphQL Launched from the command line rather than as a desktop app	Requires a terminal Endpoint discovery depends on server reflection support
Downloadable app	Downloadable app
Open source	Open source
License: MIT	License: MIT
No account 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 October 8, 2026

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