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Buf Studio vs grpcurl: catalog facts
Buf Studio	grpcurl
Free Used on the Buf website; check Buf for current terms of the wider Schema Registry.	Free The open-source application is available without a license fee.
Web	Windows, macOS, Linux, Command line
Sends gRPC and Connect requests from a browser Works with schemas in the Buf Schema Registry	Browse schemas and invoke RPC methods
Limited to Protobuf-based APIs Few details on features or pricing in the available research	Servers without reflection require proto or protoset files.
Web application	Downloadable app
Closed source	Open source
License not stated	License: MIT
Not stated if an account is needed	Not stated if an account is needed
Needs internet	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.