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MoonGen vs OpenSpeedTest

Both stand on network testing software. Which one you can start free with, which one lets you read the code, and what each costs once you pay.

MoonGen

Free plan LinuxSelf-hosted

Choose MoonGen if you need a free Linux packet generator with scriptable traffic control and network measurement. Look elsewhere if your network cards lack the required DPDK support or you need hardware checksum offloading or timestamping on ixgbe NICs with this version.

Visit MoonGen

OpenSpeedTest

Free plan AndroidiPhoneLinux+4

OpenSpeedTest provides browser-based measurements and configurable embedding, with self-hosting options for organizations that want to run it in their own environment. Firefox has stated limits for long stress tests and higher speeds.

Visit OpenSpeedTest

The facts

MoonGenOpenSpeedTest
Free planYesYes
Open sourceNot publishedNot published
Runs onLinux, Self-hostedAndroid, iPhone, Linux, Mac, Self-hosted, Web, Windows
Lowest paid planFree or on requestFree or on request
Plans published11
MakerNot publishedNot published
Websitegithub.comopenspeedtest.com
On network testing software#18 of 33#14 of 33

MoonGen: what it does well

  • Free to use and MIT licensed.
  • Lua scripts control packet construction, transmission, and reception.
  • Supports multiple CPU cores for traffic generation.
  • Offers rate control and hardware timestamping on supported NICs.
  • Includes a simplified command-line interface and a full API.

What to know first

  • Requires Linux and a DPDK-compatible network card.
  • NIC feature support varies by model.
  • Hardware checksum offloading and timestamping do not work on ixgbe NICs with this version.
  • Full API use requires custom Lua scripts.

OpenSpeedTest: what it does well

  • Measures download, upload, latency, jitter, and stability.
  • Browser test needs no app or plugin.
  • Widget supports automatic starts and test settings.
  • Free for personal and commercial widget use.
  • Docker and source-code self-hosting options.

What to know first

  • Firefox is not recommended for long stress tests.
  • Firefox is not recommended above 2.5 Gbps.
  • Self-hosting setup requires a public IP address and domain.

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