Compare software

iPerf 2iPerf3
Free

Free to download from SourceForge.

 Free

Free and open source under the BSD 3-Clause licence, developed at ESnet and Lawrence…

Android, Command line Windows, macOS, Linux, Command line
  • Measures latency, jitter and responsiveness as well as throughput
  • Multicast, bidirectional and full-duplex testing
  • Measures the link between two machines you own, not a public server
  • TCP, UDP and SCTP with tunable windows, streams and packet sizes
  • Command-line only on desktop
  • Not wire-compatible with iperf3, which can cause confusion
  • 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
Not stated if it works offline Works offline

Checked October 1, 2026

Checked September 21, 2026

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