Houjun ToolsSmall tools,
your data stays yours.
Houjun Tools are small, focused utilities for people who work with AI every day. Each one does one job well, keeps your data in places you already own, and says plainly what it stores and what it does not.
Tools
One page per tool: what it does, what you need, and its privacy policy and terms.
NewChatGPTClaude
QuietRepo
Save decisions, passages and documents from your AI chats as Markdown in your own private GitHub repository, and find them again later with citations — from ChatGPT or Claude.
Visit QuietRepo →More to come
Further tools will be added here. Each follows the same principles: one clear job, your data in your hands, and an honest description of what is stored.
Principles
What every tool on this page promises.
Your data, your storage
Content lives in accounts and files you control. A tool may pass your data along to do its job; it does not keep a copy for itself.
Least access
Each tool asks for the narrowest permission that does the job, and you can revoke it at any time.
You confirm writes
Anything that saves or changes your data happens because you asked, and the tool says so only after it really happened.
Plain policies
Every privacy policy lists what is stored, why and for how long, and matches what the code does.
Also from Houjun
Apps and research from the same team.
AppImage MLX Lab
Local AI image generation and mask-based editing for Apple Silicon Macs.
Visit Image MLX Lab →
AppVoxStage
Offline AI audiobook maker and multi-voice text to speech for Apple Silicon Macs.
Visit VoxStage →
ResearchHoujun Lab
Small AI research projects on a single Mac, measured honestly.
Visit Houjun Lab →