PhET

What it does

PhET provides fun, free, interactive, research-based science and mathematics simulations. The simulations are written in HTML5 and can be run online or downloaded to your computer. All simulations are open source. (from the product's site)

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  ChatGPT Interactive Learning Mar 2026 · openai.com · ▲143

  Learn math and science with interactive visual explanations

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  ResearchGPT2023 · ▲236

  ChatGPT for Research: Find answers, draft content and search

• SB
  Simulation-based high school physics course notes2020 · landgreen.github.io · ▲295
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  AI Math Solver by GPT-4o Free Online2024 · mymathsolver.ai · ▲187

  Solve math problems instantly with step-by-step solutions

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  Math Solver GPT2024 · ▲129

  Get instant math solutions by uploading an image

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  Paperguide Article GPT2025 · paperguide.ai · ▲75

  Write research-backed articles with citations

• TL
  The load-bearing vocabulary of Claude▲710

  Life & fun · 15d ago · louisabraham.github.io

• WI
  What if the speed of light was 5 km/h?▲579

  Special relativity simulator in which light crawls along at a human speed, so Lorentz contraction, aberration and Doppler shift happen at walking pace.

  Life & fun · 1d ago · rivendell.dmitrybrant.com

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  Articos▲398

  Launch with confidence, not gut instinct

  Life & fun · 16d ago · articos.com

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  The same nine streaming subscriptions cost $702/year more than in 2021▲374

  9 major streaming services cost $95.91/mo in 2021-03 and $154.41/mo today — up 61%, or $702 a year. Every change sourced.

  Life & fun · 21h ago · honestlyranked.com

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  Nex▲363

  Claude Cowork for high-volume GTM workflows

  Life & fun · 8d ago · nex.ai

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  Notify.domains▲321

  Know the moment a domain opportunity appears

  Life & fun · 13d ago · notify.domains

• IM
  I may have created a new type of puzzle▲1,859

  Life & fun · 2022 · dogbunnypuzzle.com

• IM
  I'm building an open-source Amazon▲1,335

  A couple of years ago, I had an interesting idea. What if there was a marketplace where all the underlying tech was open-source? The order management system, the storefront, customer support, etc. The marketplace would simply connect to the seller’s infra instead of locking them in. If, for some reason, the seller is removed from the marketplace, their software stays with them and they can continue accepting orders directly. This model can be used to disrupt any marketplace from AirBNB to UberEats: building tech for home renters and restaurants and later, leveraging that to build a competing…

  Dev tools · 2022 · openship.org

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  Polywork▲1,214

  Discover opportunities to collaborate

  Life & fun · 2022

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  xTiles▲1,036

  Organize your ideas & projects visually

  Work · 2022 · xtiles.app

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  Arcade 2.0▲1,026

  The easiest way to showcase your product

  Life & fun · 2022 · arcade.software

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  Maven▲978

  100+ live courses taught by experts, education reimagined

  Life & fun · 2022 · maven.com