Things I've
shipped.
A working list — companies founded, books printed, courses taught, tools released into the wild. Listed newest first, ungrouped on purpose. The good ones tend to look small at the time.
See what
others miss.
A multi‑LLM AI platform that runs Google, Anthropic, OpenAI and xAI side‑by‑side and fact‑checks them against each other — eliminating hallucinations through competitive cross‑model verification. Persistent encrypted memory, a native creative suite (Iris), and we charge only 30% above raw API cost.
Endkit
A starter kit for shipping mobile apps in a weekend. Auth, payments, push, in 4 files.
Frontend Master Class
A 32‑hour course on Inflearn. 2,100+ enrolled. Korean‑language.
살아야 할 이유
An ebook on the years I almost didn't make it. PDF, pay‑what‑you‑can.
Reasons to Live
English edition of 살아야 할 이유 — a short journey through the memories of someone who cries out to live.
UX 디자인의 모든 것
User experience considerations for UX designers. Rediscovering the original purpose when building applications.
쉽게 설명한 자바스크립트 알고리즘
The easiest algorithm textbook for beginner web developers.
Historical · parallax
Multi‑LLM archive & timeline research — compare model interpretations of historical sources side‑by‑side.
Legal · parallax
Cross‑model legal reasoning over statute and case law. Built on the Parallax multi‑LLM fact‑check core.
Truth · parallax
Claim verification. Run a statement past four frontier models and see who agrees, who dissents, and why.