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Insomnia vs Testfully: catalog facts
Insomnia	Testfully
Freemium Free to use, with a free account unlocking most features. Kong sells paid plans for teams…	Freemium Free to start with offline use; paid and enterprise plans available.
Windows, macOS, Linux	Web, Browser extension
REST, GraphQL, gRPC, WebSockets and Server-Sent Events in one client Local Vault and Git Sync mean the cloud is optional	Choice of local offline storage or cloud sync Imports from Postman and Insomnia
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	Proprietary Team and monitoring features are aimed at paid plans
Downloadable app	Downloadable app, Web application, Browser extension
Open source	Closed 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 24, 2026

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