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Restfox vs Insomnia: catalog facts
Restfox	Insomnia
Free Free and open source.	Freemium Free to use, with a free account unlocking most features. Kong sells paid plans for teams…
Web	Windows, macOS, Linux
Lightweight and quick to open Works offline	REST, GraphQL, gRPC, WebSockets and Server-Sent Events in one client Local Vault and Git Sync mean the cloud is optional
Fewer collaboration and automation features than larger API platforms	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
Downloadable app, Web application	Downloadable app
Open source	Open source
License not stated	License: Apache-2.0
Not stated if an account is needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 21, 2026

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