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Belarc Advisor vs SIW: catalog facts
Belarc Advisor	SIW
Free Free for personal use only; commercial and government use is prohibited.	Paid Commercial software; check the developer site for current editions and prices.
Windows	Windows
Detailed inventory of hardware and installed software Lists missing Microsoft hotfixes and anti-virus status	Covers hardware, software and network in one place Shows product keys and software licences
Personal use only; not allowed in businesses or schools Windows only	Windows only Closed source
Downloadable app	Downloadable app
Closed source	Closed source
License: Proprietary	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 24, 2026	Official website Full listing and sources Checked September 24, 2026

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