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Stoplight vs Insomnia: catalog facts
Stoplight	Insomnia
Freemium A free plan is available to get started, with paid plans for larger teams.	Freemium Free to use, with a free account unlocking most features. Kong sells paid plans for teams…
Web	Windows, macOS, Linux
Visual OpenAPI editor that needs little specialised knowledge Mock servers from the API description	REST, GraphQL, gRPC, WebSockets and Server-Sent Events in one client Local Vault and Git Sync mean the cloud is optional
Hosted service that requires an account Focused on teams and organisations rather than individual use	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
Web application, Hosted service	Downloadable app
Closed source	Open source
License not stated	License: Apache-2.0
Account needed	No account needed
Needs internet	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.