Compare software

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

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