
Motion Magic Physics Simulator
FacetLab by 4Cs.co.za
Vectora.one
myPhysicsLab
SimPhy
Physion
BrainBuff.app
Founded in 2002 by Nobel Laureate Carl Wieman, the PhET Interactive Simulations project at the University of Colorado Boulder creates free interactive math and science simulations.

Fast.com
Speedtest.net
SpeedOf.Me
Testmy.net
nPerf
Speed Test by Cloudflare
speedtest-cli
Self-hosted Speedtest for HTML5. Easy setup, examples, configurable, mobile friendly.
Which is more popular?
LibreSpeed might be a bit more popular than PhET Interactive Simulations. We know about 34 links to it since March 2021 and only 27 links to PhET Interactive Simulations.
Website, pricing, platforms and company facts side by side.
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| Website | phet.colorado.edu | github.com |
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What each product offers, as listed by its team.


Possible disadvantages
Possible disadvantages
Walkthroughs and reviews on video.
Dr. Michael Dubson: PhET Interactive Simulations
Self-host your own internet speed test with LibreSpeed!
More videos
How often each product is chosen within a category, 0–100% relative to the other.


Share your experience with using PhET Interactive Simulations and LibreSpeed. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.


Use the simulations from here: https://phet.colorado.edu/ to make correlations of Physics with real life concepts. After you run through each simulation, make notes on your ipad/laptop/or on a piece of paper with a diagram and... Source: about 3 years ago
Google Classroom. Phet https://phet.colorado.edu Creating lesson plans or handouts to go with simulations. Tinkercad for 3D modeling. Source: about 3 years ago
I’m no chem teacher but I have used phet in junior science. Might be worth a shout. Source: over 3 years ago
I run internetspeedtest.net, a free, no-signup speed test built on the open-source LibreSpeed engine. - Source: dev.to / 19 days ago
Try hosting a DIY speed test on a cloud server (like Google colab or the free oracle instances or whatever): https://github.com/librespeed/speedtest. - Source: Hacker News / about 3 years ago
It should be DIA. They provide the internet connection to the company since 2 decades and it's a very small ISP, so it's very vague in terms of contract. Iperf was giving me very terrible results with TCP, UDP was giving me a couple of... Source: over 3 years ago
When comparing PhET Interactive Simulations and LibreSpeed, you can also consider the following products.

Motion Magic is a physics simulator built to help students visualize and solve classical mechanics problems through interactive simulations and analysis.
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Quickly test your internet speed with this fast-loading speed test powered by Netflix.
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Polish a rough diamond in your browser and learn the 4Cs by playing.
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Test your Internet connection bandwidth to locations around the world with this interactive broadband speed test from Ookla
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Interactive STEM learning platform with hands-on simulations. Explore Physics, Chemistry, Math & Biology through 3D visualizations and real-time parameter manipulation — not passive video watching.
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SpeedOf.Me is an HTML5 Internet speed test. No Flash or Java needed!
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