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hping3 vs Tcpreplay: catalog facts
hping3	Tcpreplay
Free Free and open source under the GPL.	Free Free and open source under the GPLv3.
macOS, Linux, Command line	Command line
Crafts arbitrary packets, so firewall and filtering behaviour can be tested precisely Advanced traceroute and path MTU discovery modes	Replays captures at original timing, a set rate or line rate Rewrites addresses, ports, VLAN tags and checksums
Requires root and can disrupt networks if used carelessly Development stopped years ago	Command-line only, with no graphical interface Requires existing packet captures to work from
Downloadable app	Downloadable app
Open source	Open source
License: GPL-2.0	License: GPL-3.0
Not stated if an account is needed	No account needed
Not stated if it works offline	Works offline
Official website Full listing and sources Checked September 22, 2026	Official website Full listing and sources Checked September 23, 2026

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