Compare software

iPerf3 vs NTttcp: catalog facts
iPerf3	NTttcp
Free Free and open source under the BSD 3-Clause licence, developed at ESnet and Lawrence…	Free Free and open source.
Windows, macOS, Linux, Command line	Windows, Command line
Measures the link between two machines you own, not a public server TCP, UDP and SCTP with tunable windows, streams and packet sizes	Official Microsoft throughput tool Prebuilt binaries available
Command line only Not backwards compatible with the original iperf	This repository targets Windows only Command-line only
Downloadable app	Downloadable app
Open source	Open source
License: BSD-3-Clause	License not stated
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked September 21, 2026	Official website Full listing and sources Checked September 24, 2026

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