Compare software

Responder vs Impacket: catalog facts
Responder	Impacket
Free The software is free under its open-source licence. Hosting, hardware and external…	Free The software is free under its open-source licence. Hosting, hardware and external…
Linux, Command line	Windows, macOS, Linux, Command line
It answers failed name lookups and runs rogue authentication servers for many protocols, which demonstrates the risk of…	Its SMB, MSRPC and Kerberos implementations are the foundation most Windows network tooling is built on, with working…
It captures real credentials from real users, so it is only ever appropriate inside an authorised engagement.	It is a library with example scripts rather than a finished product, and the example tools assume you…
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0	License: BSD-2-Clause
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.