Nathan Langley

Projects

Software I've designed, built, and shipped — all open source, all running on consumer hardware. Further details are available by clicking on each project.

Orb app icon

Orb — Proactive AI

Live on the App Store · Swift/Capacitor iOS app · Python/FastAPI server (open source, MIT)

A voice-first AI assistant that talks first: it briefs you, watches what you ask it to, and reaches out when something matters. Pairs with an open-source server on your own computer — no account, no cloud; the privacy label reads "Data Not Collected."

App Store Server code Site
hollow-agentOS terminal demo

hollow-agentOS

278 stars · 52 releases · Python, FastAPI, Ollama, Docker

A self-modifying multi-agent system: three LLM agents select their own goals and write new Python tools at runtime, behind a validation gate that catches agents falsely claiming task completion.

Code
XViral — X ranking pipeline engagement-head weights

XViral

Python · built on X's official x-algorithm source release

A local replica of X's For You ranking pipeline, rebuilt from the source X published in 2026 and turned into a draft-post scorer. Every number X withheld is a labeled free parameter, fitted against real posts.

Code Findings
VirtualPC — NAND to CPU 8-bit virtual machine

VirtualPC

24 stars · Python

An 8-bit computer built up from a single NAND gate, virtual CPU included — computer architecture from first principles.

Code
S&Poké 500 index chart

S&Poké 500

poke500.com · Python, GitHub Actions, GitHub Pages

A price-weighted index of the 500 most valuable English raw Pokémon cards — the S&P 500 of the card market, rebuilt daily from TCGplayer prices.

Live Site Code
Unit Converter app icon

Unit Converter

Android · Kotlin

A unit conversion app, published independently on the Google Play Store.

Google Play