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Insomnia vs Restfox: catalog facts
Insomnia	Restfox
Freemium Free to use, with a free account unlocking most features. Kong sells paid plans for teams…	Free Free and open source.
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	Lightweight and quick to open Works offline
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	Fewer collaboration and automation features than larger API platforms
Downloadable app	Downloadable app, Web application
Open source	Open source
License: Apache-2.0	License not stated
No account needed	Not stated if an account is needed
Works offline	Works offline
Official website Full listing and sources Checked September 21, 2026	Official website Full listing and sources Checked September 23, 2026

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