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Naabu vs masscan: catalog facts
Naabu	masscan
Free The open-source software is available without a license fee. Hosting, hardware and…	Free The open-source software is available without a license fee. Hosting, hardware and…
Windows, macOS, Linux, Command line	macOS, Linux, Command line
Supports several scan methods and optional Nmap integration.	Uses a high-throughput command-line scanning engine.
Some scan methods require elevated system privileges.	High packet rates can overwhelm networks if poorly configured.
Downloadable app	Downloadable app
Open source	Open source
License: MIT	License: AGPL-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.