Compare software

NetPeek vs fnmap: catalog facts
NetPeek	fnmap
Free Free and open source under the GPL 3.	Free Free and open source under the GPL-2.0 or later licence.
Linux	Linux
Simple GNOME interface for network discovery Shows open ports on discovered devices	Graphical interface for nmap scans Quick Scan option for common scans
Linux only Far fewer options than a full scanner like Nmap	Intended for authorized testing of networks you own or may scan Little recent activity visible on the developer site
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0-or-later	License: GPL-2.0-or-later
No account needed	No account needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked October 1, 2026

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