Compare software

NTttcp vs iPerf 2: catalog facts
NTttcp	iPerf 2
Free Free and open source.	Free Free to download from SourceForge.
Windows, Command line	Android, Command line
Official Microsoft throughput tool Prebuilt binaries available	Measures latency, jitter and responsiveness as well as throughput Multicast, bidirectional and full-duplex testing
This repository targets Windows only Command-line only	Command-line only on desktop Not wire-compatible with iperf3, which can cause confusion
Downloadable app	Downloadable app
Open source	Open source
License not stated	License not stated
No account needed	No account needed
Works offline	Not stated if it works offline
Official website Full listing and sources Checked September 24, 2026	Official website Full listing and sources Checked October 1, 2026

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