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Insomnia vs Buf Studio: catalog facts
Insomnia	Buf Studio
Freemium Free to use, with a free account unlocking most features. Kong sells paid plans for teams…	Free Used on the Buf website; check Buf for current terms of the wider Schema Registry.
Windows, macOS, Linux	Web
REST, GraphQL, gRPC, WebSockets and Server-Sent Events in one client Local Vault and Git Sync mean the cloud is optional	Sends gRPC and Connect requests from a browser Works with schemas in the Buf Schema Registry
Most features expect an account, even though a Scratch Pad works without one The 2023 move to account-first storage cost it a lot of goodwill	Limited to Protobuf-based APIs Few details on features or pricing in the available research
Downloadable app	Web application
Open source	Closed source
License: Apache-2.0	License not stated
No account needed	Not stated if an account is needed
Works offline	Needs internet
Official website Full listing and sources Checked September 21, 2026	Official website Full listing and sources Checked October 2, 2026

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