Lattice
A task runner and toolchain manager for monorepos in any language. It figures out what each workspace already uses, runs everything in dependency order, and caches the results so you only build what changed.
I build things I actually want to use.
Some are useful, some just make me laugh. I hope you find a bit of both here.
Some of my faves
All work
ArenaSwap
A browser extension that watches every live game in your tabs and swaps you to whichever one is most exciting in the moment, scored by a custom algorithm I built called PowerScore.
CookYourBooks
A full-stack recipe management system built in Java, plus coursework projects from Northeastern's Program Design & Implementation sequence.
The Book Nook Project
Built and shipped the website for a Philadelphia-area nonprofit getting books into the hands of underprivileged kids.
Newsroom
All of it
Ryan Mullin Ships ArenaSwap 2.0
The rebuilt browser extension now tracks 31 leagues instead of 12, checks each game on its own clock based on how close it is, and speaks 11 languages.
Ryan Mullin Ships ArenaSwap 1.0
ArenaSwap scores every live game in a viewer's open tabs and switches the browser to whichever one is most exciting at that moment.
Ryan Mullin Accepted to Northeastern's Husky Ambassadors
Mullin begins training this month as an admissions ambassador, a role most students take on later than their first year.
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© 2026 Ryan Mullin// A giraffe's long neck contains the same number of vertebrae as a human neck (7) 🦒