Compare software

OpenSpeedTestiPerf3
Free

Free to use. Self-hosting is available under its own licence terms.

 Free

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

Web, Self-hosted Windows, macOS, Linux, Command line
  • Runs in any browser with no app or plugin
  • Docker image makes internal LAN throughput testing trivial
  • Measures the link between two machines you own, not a public server
  • TCP, UDP and SCTP with tunable windows, streams and packet sizes
  • Browser-based measurement caps out below what dedicated tools reach
  • The hosted version's accuracy depends on server location
  • Command line only
  • Not backwards compatible with the original iperf
Web application, Self-hosted Downloadable app
Open source Open source
License not stated License: BSD-3-Clause
Not stated if an account is needed No account needed
Not stated if it works offline Works offline

Checked September 22, 2026

Checked September 21, 2026

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