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Nessus vs Vuls: catalog facts
Nessus	Vuls
Freemium Nessus Essentials is free for up to sixteen IP addresses. Professional is a paid…	Free The open-source software is available without a license fee. Hosting, hardware and…
Windows, macOS, Linux	Linux, Command line
Very large and rapidly updated plugin library Configuration and compliance auditing alongside vulnerability scanning	Collects package information without a dedicated endpoint agent.
Free Essentials edition is capped at sixteen IP addresses Closed source, with subscription pricing beyond the free tier	Requires system access and up-to-date vulnerability data.
Downloadable app	Downloadable app
Closed source	Open source
License not stated	License: GPL-3.0
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 22, 2026	Official website Full listing and sources Checked September 22, 2026

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