Compare software

M-Lab Speed TestOpenSpeedTest
Free

Free to use in the browser.

 Free

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

Web Web, Self-hosted
  • Reports retransmission as well as speed and latency
  • Openly licensed measurement tools
  • Runs in any browser with no app or plugin
  • Docker image makes internal LAN throughput testing trivial
  • Your IP address is retained and published with the results
  • Fewer extras than commercial speed tests
  • Browser-based measurement caps out below what dedicated tools reach
  • The hosted version's accuracy depends on server location
Web application Web application, Self-hosted
Closed source Open source
License not stated License not stated
No account needed Not stated if an account is needed
Needs internet Not stated if it works offline

Checked September 23, 2026

Checked September 22, 2026

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