Compare software

WhoisCL vs OpenRDAP: catalog facts
WhoisCL	OpenRDAP
Free Freeware from Nir Sofer.	Free Free and open source under the MIT License.
Windows, Command line	Windows, Linux, Command line
Selects a WHOIS server based on the domain extension Supports custom servers and SOCKS4 or SOCKS5 proxies	Supports domain, IP, autonomous system, nameserver, and entity queries. Outputs results as text or JSON, with WHOIS-style output for domain queries.
Windows only Requires an internet connection and WHOIS access on port 43	Limitations not stated
Downloadable app	Downloadable app
Closed source	Open source
License: Freeware	License: MIT
Not stated if an account is needed	Not stated if an account is needed
Needs internet	Not stated if it works offline
Official website Full listing and sources Checked October 8, 2026	Official website Full listing and sources Checked October 6, 2026

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