Compare software

Robtex vs quien: catalog facts
Robtex	quien
Free Lookups are free on the website.	Free Free and open source under the MIT licence.
Web	Windows, Command line
Many lookup types from one search page Covers AS numbers and AS macros as well as domains and IPs	WHOIS, DNS, mail, TLS and HTTP checks in one view Readable tabbed TUI instead of raw whois text
Web service only Research shows lookups rather than any monitoring or alerting	Terminal only Young project from a single developer
Web application	Downloadable app
Closed source	Open source
License not stated	License: MIT
No account needed	No account needed
Needs internet	Needs internet
Official website Full listing and sources Checked September 24, 2026	Official website Full listing and sources Checked October 2, 2026

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