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Ethr vs NTttcp: catalog facts
Ethr	NTttcp
Free Free and open source under the MIT licence.	Free Free and open source.
Windows, macOS, Linux, Command line	Windows, Command line
Covers TCP, UDP and ICMP in one tool Same tool on Windows, Linux and macOS	Official Microsoft throughput tool Prebuilt binaries available
Command-line only No formal releases listed on the repository	This repository targets Windows only Command-line only
Downloadable app	Downloadable app
Open source	Open source
License: MIT	License not stated
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked September 24, 2026

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