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Step CI vs Insomnia: catalog facts
Step CI	Insomnia
Freemium The open-source runner is free; the site also lists paid options and demos.	Freemium Free to use, with a free account unlocking most features. Kong sells paid plans for teams…
Command line	Windows, macOS, Linux
Tests REST, GraphQL, gRPC and SOAP in one format Imports from OpenAPI, Postman and Insomnia	REST, GraphQL, gRPC, WebSockets and Server-Sent Events in one client Local Vault and Git Sync mean the cloud is optional
No graphical interface for manual requests Requires Node.js or Docker to run	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	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 24, 2026	Official website Full listing and sources Checked September 21, 2026

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