Jaeone Jang 👋

aka gpdir16, jaeone22
Location South Korea
Focus Privacy, Security, AI

Indie maker from South Korea, building user-friendly software that respects privacy. Currently running several services (listed below) and maintaining a few open-source projects.

Portfolio

Projects I am currently working on.

Open source

MangoTL

AI-powered manga, manhwa, webtoon, and comic image translator. Browser extension plus self-hostable local server with OCR and translation pipeline.

Summary
Comic image translator
Stack
JavaScript, Bun
Pricing
Free
Open source

tabyAgent

A lighter, easier alternative to OpenClaw/Hermes. Runs autonomously inside Docker and chats with you through Telegram. Supports skills, MCP, and scheduled tasks.

Summary
AI agent for Telegram
Stack
JavaScript, Docker
Pricing
Free
SaaS

PrivateStater

It is an integrated SaaS that combines analytics, captcha, and feedback features into one.

Summary
Web analytics
Stack
NodeJS, Web, MongoDB, Redis
Pricing
Free
Desktop

LocalKeys

A desktop application that replaces scattered .env files with a secure, encrypted vault. LocalKeys is built to work offline, keep secrets on your machine, and integrate cleanly into everyday development workflows.

Summary
Secrets manage software
Stack
Electron, Web
Pricing
One-time purchase

Principles

How I think about building products and writing software.

Privacy

Most people wouldn't want to be tracked or have their information sold to advertising companies. I feel the same way, which is why I use end-to-end encryption whenever possible and do not track users.

Local-first

If it can be used locally, processing is done only on the device and nothing is sent to the server. Network access is limited to the minimum necessary for the user.

Honest, simple pricing

I dislike dark patterns, forced upgrades, and hidden limits. PrivateStater Analytics and many goUP utilities are 100% free and LocalKeys uses a one-time license instead of a subscription. Pricing should be predictable and fair.

Practical over fancy

I value reliability, clarity, and maintainability more than flashy features. A small tool that solves one problem well is usually more helpful than a large platform that tries to do everything.