Compare software

Inso vs vacuum: catalog facts
Inso	vacuum
Free Free to download and use as part of Kong's Insomnia platform.	Free Free and open source under the MIT licence.
macOS, Command line	Windows, Command line
Runs Insomnia tests and collection runs in CI/CD Lints API specifications with support for custom rules	Lints OpenAPI, AsyncAPI and JSON Schema OWASP rules and custom rules in Go or JavaScript
Most useful alongside the Insomnia desktop app Command line only, no graphical interface	Mostly command-line driven Ruleset configuration takes some learning
Downloadable app	Downloadable app
Open source	Open source
License not stated	License: MIT
Not stated if an account is needed	No account needed
Not stated if it works offline	Works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked October 2, 2026

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