Software Alternatives, Accelerators & Startups

OpenSpeedTest VS iperf

Compare OpenSpeedTest VS iperf and see what are their differences

OpenSpeedTest logo OpenSpeedTest

Broadband Internet Speed Test Unlocked!

iperf logo iperf

A TCP, UDP, and SCTP network bandwidth measurement tool
  • OpenSpeedTest Landing page
    Landing page //
    2023-01-11
  • iperf Landing page
    Landing page //
    2023-09-17

OpenSpeedTest features and specs

  • User Friendly
    OpenSpeedTest has an easy-to-use interface that makes it simple for users of all technical levels to perform speed tests.
  • No Flash Required
    The service doesn't rely on Adobe Flash, which ensures compatibility with modern web standards and improves security.
  • Cross-platform
    OpenSpeedTest works on various devices and operating systems, including Windows, macOS, Android, and iOS, providing flexibility to users.
  • Privacy
    The platform claims not to store any personal information or user data, which enhances user privacy.
  • Server Selection
    OpenSpeedTest allows users to choose from a variety of servers worldwide to test their internet speed, providing more accurate results.
  • Lightweight
    The website is lightweight and loads quickly, improving the overall user experience.

Possible disadvantages of OpenSpeedTest

  • Limited Features
    Compared to some other internet speed test tools, OpenSpeedTest may lack advanced features such as detailed metrics and logging.
  • Accuracy
    The accuracy of the test results can vary based on server location and network conditions, which might not always reflect the true speed.
  • Server Dependency
    Test results can be influenced by the performance and load on their test servers, potentially skewing results.
  • No Mobile App
    As of now, OpenSpeedTest does not offer a dedicated mobile app, which might be less convenient for mobile users.
  • Ad-supported
    The website contains advertisements, which might be distracting or annoying for some users.

iperf features and specs

  • Cross-Platform Compatibility
    iperf is compatible with a variety of operating systems including Windows, Linux, and macOS, making it a versatile tool for network performance testing across different environments.
  • Comprehensive Performance Metrics
    Provides detailed metrics such as bandwidth, jitter, and packet loss, which are essential for in-depth network analysis and troubleshooting.
  • Client-Server Model
    Utilizes a client-server model that allows for measuring the maximum TCP and UDP bandwidth between two endpoints, making it suitable for both local and remote testing.
  • Open Source
    Being open-source, iperf allows users to review, modify, and contribute to the codebase, ensuring transparency and fostering community involvement.
  • Customizable Test Parameters
    Allows users to customize tests with various parameters such as port number, buffer size, and test duration, offering flexibility to perform targeted network evaluations.

Possible disadvantages of iperf

  • Complexity for Beginners
    The command-line interface and numerous parameters might be overwhelming for beginners who are not familiar with network testing tools.
  • Limited Graphical Interface
    While powerful in functionality, iperf lacks a native graphical user interface, which could be a disadvantage for users who prefer visual tools over command-line utilities.
  • Resource Consumption
    iperf can consume substantial network resources and CPU power during testing, potentially affecting other applications running on the same network or device.
  • Manual Deployment Required
    Users need to manually deploy iperf on both client and server machines, which may be cumbersome for those looking for out-of-the-box network testing solutions.
  • Security Considerations
    Running iperf in server mode might expose a system to network attacks if not secured properly, necessitating careful consideration of security measures.

Analysis of OpenSpeedTest

Overall verdict

  • OpenSpeedTest is a good choice for those looking for a quick and accessible way to test their internet speed without needing to install additional software. Its simplicity and wide compatibility make it a convenient option, though it may not offer as many advanced features as some other dedicated speed test software.

Why this product is good

  • OpenSpeedTest is a web-based internet speed testing tool that is appreciated for its ease of use and no requirement of Flash or other plugins. It provides a simple and quick method to check internet speed through any web browser. The platform is known for its compatibility with various devices and operating systems, making it accessible to a wide range of users. Additionally, it offers a clean and straightforward interface, which is user-friendly.

Recommended for

  • users seeking a quick and easy speed test
  • individuals who prefer web-based tools
  • those using multiple devices and operating systems
  • people who want to avoid extra software installations

OpenSpeedTest videos

SPEED TEST ON ANY DEVICE // OpenSpeedTest Tutorial

More videos:

  • Review - Installing OpenSpeedTest LAN Speed Test on a Synology NAS
  • Review - Installing OpenSpeedTest LAN Speed Test on a Windows 10

iperf videos

Using Iperf to measure network speed / bandwidth

More videos:

  • Tutorial - How to use iperf to test local network LAN speed in Windows 10
  • Review - [HOWTO] Test My Network Speed?! [iPerf & JPerf]

Category Popularity

0-100% (relative to OpenSpeedTest and iperf)
Monitoring Tools
65 65%
35% 35
Speed Test
85 85%
15% 15
Network & Admin
0 0%
100% 100
Developer Tools
100 100%
0% 0

User comments

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Social recommendations and mentions

Based on our record, OpenSpeedTest seems to be a lot more popular than iperf. While we know about 42 links to OpenSpeedTest, we've tracked only 4 mentions of iperf. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.

OpenSpeedTest mentions (42)

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iperf mentions (4)

  • Microsoft: Don't Use Iperf3 on Windows
    Just some clarification: IPerf 2 is different from the iperf3 found at https://github.com/esnet/iperf. - Source: Hacker News / about 2 years ago
  • Yet Another Bench Script (YABS): evaluate Linux server performance with this simple Bash script and utility
    Network - network throughput (both incoming and outgoing) is tested using iperf3 on several geographically diverse public iperf servers. Source: almost 4 years ago
  • Speed testing Visible with a modem
    File transfer using iperf3 over Tailscale. I noticed that the bandwidth to my home computer (on a 500/500 fiber connection) was higher than with speedtest.net. For the first few days I was getting downloads and uploads of 28Mbps (+/- std dev of 6Mbps) and 150ms latency (+/- 35ms). After somewhere around 100GB total transfer (maybe half of that over Tailscale), it is now downloading and uploading at 10Mbps (+/-... Source: over 4 years ago
  • FTP upload speed isn't great
    I can add to this. I have two mini self contained projects to create multiarch static bins of mtr and iperf3 for general usage. Source: about 5 years ago

What are some alternatives?

When comparing OpenSpeedTest and iperf, you can also consider the following products

Fast.com - Quickly test your internet speed with this fast-loading speed test powered by Netflix.

JPerf - This project gives a better UI and new functionalities to the initial JPerf 1.

Speedtest.net - Test your Internet connection bandwidth to locations around the world with this interactive broadband speed test from Ookla

netperf - Netperf is a benchmark that can be used to measure the performance of many different types of networking. It provides tests for both unidirectional throughput, and end-to-end latency. - HewlettPack...

Open Nettest - Open Nettest is a platform for collecting, processing and visualizing data related QoS and QoE.

Tessabyte - Tessabyte is a professional Wi-Fi, LAN, and WAN test suite with TCP/UDP throughput, jitter, and QoS analysis, plus payload control, reporting, and schedulingโ€”engineered for precision.