Fermion

Fermion

Building MathHover at Fermion
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About

I build tools for people who write math. MathHover is a math input method for macOS and Windows: press one key, type the equation where your cursor already is, and the finished LaTeX lands back in whatever app you were using. No account, no cloud, no AI calls. We are crowdfunding the free and open-source v1.0 on Kickstarter.

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Maker History

  • MathHover
    MathHoverType LaTeX next to your cursor in any app — free, offline
    Aug 2026
    • 🎉
    Joined Product HuntAugust 4th, 2026

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2d ago

MathHover - Type LaTeX next to your cursor in any app — free, offline

MathHover opens a math panel right next to your cursor in any app. Type familiar tokens, pick from live typeset candidates, and press Enter — the LaTeX lands back where you were. It remembers the delimiter style each destination wants, so ChatGPT gets \( \), Obsidian gets $ $, and your terminal gets raw LaTeX. No account, no cloud, no AI calls — everything that turns your keystrokes into an equation runs locally. Free to use today, and v1.0 is going open source under Apache-2.0.
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