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grpcurl vs Warthog: catalog facts
grpcurl	Warthog
Free The open-source application is available without a license fee.	Free Free to download from GitHub.
Windows, macOS, Linux, Command line	Windows, macOS, Linux
Browse schemas and invoke RPC methods	Automatic parsing of proto definitions into input forms Several authentication methods, including JWT and GCE
Servers without reflection require proto or protoset files.	gRPC only, no REST or GraphQL Small project with a small user base
Downloadable app	Downloadable app
Open source	Closed source
License: MIT	License not stated
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 24, 2026

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