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Insomnia vs Warthog: catalog facts
Insomnia	Warthog
Freemium Free to use, with a free account unlocking most features. Kong sells paid plans for teams…	Free Free to download from GitHub.
Windows, macOS, Linux	Windows, macOS, Linux
REST, GraphQL, gRPC, WebSockets and Server-Sent Events in one client Local Vault and Git Sync mean the cloud is optional	Automatic parsing of proto definitions into input forms Several authentication methods, including JWT and GCE
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	gRPC only, no REST or GraphQL Small project with a small user base
Downloadable app	Downloadable app
Open source	Closed source
License: Apache-2.0	License not stated
No account needed	No account needed
Works offline	Not stated if it works offline
Official website Full listing and sources Checked September 21, 2026	Official website Full listing and sources Checked September 24, 2026

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