u/biagioraucci

I use an old iPod as a portable library: not out of nostalgia, but because some classics still deserve an object with more memory than most contemporary conversations.

https://preview.redd.it/02z3myv26ebh1.png?width=1086&format=png&auto=webp&s=5fe648cb3f99ec6a20af69da7b368f4d4312835e

I built FormulaDeck, a small native macOS app for composing LaTeX formulas, previewing them in real time, and copying them quickly into a document.
The idea is deliberately simple: keep the LaTeX source as the single source of truth, render a live preview with KaTeX, and make formula writing a little less interruptive.

Features:

• symbol palette for common mathematical expressions;
• live rendered preview;
• copy as raw LaTeX, inline $…$, or display $$…$$;
• offline runtime behavior;
• Dark Mode support;
• resizable symbol palette;
• native macOS interface built with Cocoa/AppKit via PyObjC.

It is not a full WYSIWYG equation editor and does not try to replace a LaTeX workflow. It is just a small companion tool for people who write formulas often and want a quick preview/copy loop.

Repo: https://github.com/braucci/FormulaDeckMac

MIT licensed.

Feedback of any kind is welcome: criticism, suggestions, feature requests, rough edges, anything. And if you try it and find a bug, please let me know — thanks!

https://preview.redd.it/f89oajtbld9h1.png?width=2584&format=png&auto=webp&s=82fed93d1ab3fe645a0352fab6be764cdf26dd28

I teach Aircraft Structures at a technical high school, and I write all my course material in LaTeX. What started as "let me tweak the colors a bit" turned into a full drop-in theme over a few weekends.

It's called Skywrite. The idea: technical notes that are actually pleasant to read. A cool blue-grey "drafting table" palette, colour-coded callout boxes (definition / theorem / proof / example / intuition / warning…) each with its own hand-drawn TikZ icon, a monograph-style cover, part dividers that open like book chapters with a big Garamond chapter number, and a matching pgfplots style so the graphs don't clash.

A few things I'm oddly proud of:

• Works on pdfLaTeX, XeLaTeX and LuaLaTeX — it detects the engine and loads fonts accordingly, so no "wrong compiler" headaches.
• Light and dark modes, five accent colours, Italian/English labels.
• A paper=white option for when you actually have to print and want to spare the toner.
• One self-indulgent detail: an automatic coffee-stain on the first section. Because of course.

One .sty file, a worked example, and a guide. Drop it next to your .tex, set one line, compile.

Repo (MIT licensed): https://github.com/braucci/skywrite

Happy to hear feedback — especially the rough edges. First time sharing something like this.