iPerf3 icon
iPerf3 icon

iPerf3

 19 likes

The iperf series of tools perform active measurements to determine the maximum achievable bandwidth on IP networks. It supports tuning of various parameters related to timing, protocols, and buffers. For each test it reports the measured throughput, loss, and other parameters.

iPerf3 screenshot 1

License model

  • FreeOpen Source

Country of Origin

  • US flagUnited States

Platforms

  • Mac
  • Windows
  • Linux
  • Android
  • Android Tablet
  • Wine
  • FreeBSD
  • Docker
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19likes
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0news articles

Features

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  1.  Root required
  2.  LAN
  3.  Internet Speed Test

 Tags

  • speed-meter
  • network-performance
  • bandwidth
  • download-tester
  • network-quality
  • upload-tester
  • speed-analysis
  • network-testing
  • wifi-testing

iPerf3 News & Activities

Highlights All activities

Recent activities

  • App icon
    Hardware5286 added iPerf3 as alternative to iPerf3Client
    16 days ago
  • Hardware5286 liked iPerf3
    16 days ago
  • App icon
    fujiapple852 added iPerf3 as alternative to Trippy
    about 1 month ago
  • App icon
    Netmantics added iPerf3 as alternative to Tessabyte
    2 months ago
  • axuttaja added iPerf3 as alternative to Ethr
    3 months ago
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iPerf3 information

AlternativeTo Category

Network & Admin

GitHub repository

  •  7,569 Stars
  •  1,337 Forks
  •  232 Open Issues
  •   Updated May 30, 2025 
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iPerf3 was added to AlternativeTo by sirius on Sep 28, 2012 and this page was last updated Apr 28, 2021.
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What is iPerf3?

The iperf series of tools perform active measurements to determine the maximum achievable bandwidth on IP networks. It supports tuning of various parameters related to timing, protocols, and buffers. For each test it reports the measured throughput, loss, and other parameters.

This version, sometimes referred to as iperf3, is a redesign of an original version developed at NLANR / DAST. iperf3 is a new implementation from scratch, with the goal of a smaller, simpler code base, and a library version of the functionality that can be used in other programs. iperf3 also incorporates a number of features found in other tools such as nuttcp and netperf, but were missing from the original iperf. These include, for example, a zero-copy mode and optional JSON output. Note that iperf3 is not backwards compatible with the original iperf.

Primary development for iperf3 takes place on CentOS Linux, FreeBSD, and macOS. At this time, these are the only officially supported platforms, however there have been some reports of success with OpenBSD, Android, and other Linux distributions.

iperf3 is principally developed by ESnet / Lawrence Berkeley National Laboratory. It is released under a three-clause BSD license.

iperf2 is no longer being developed by its original maintainers. However, beginning in 2014, another developer began fixing bugs and enhancing functionality, and generating releases of iperf2. Both projects (as of late 2017) are currently being developed actively, but independently. More information can be found in the iperf3 FAQ.

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