AI tools, games and software by HumanityZ.

Meet Christabel, the AI I build with, play a browser game, or look at the apps I’m making.

Christabel ↓Nightporch ↓Vitals ↓All games ↓All software ↓

AI tools

Christabel and the second brain

How it gets built

Christabel.

Christabel is one name for several AI models. Some run in the cloud and some run on my own machines. Which model does the work changes from job to job. The name, the rules and the memory stay the same.

The memory is the second brain: plain text files in a private repository that every model reads from and writes to. No model remembers yesterday on its own, so the brain does it for them.

The humanDecides what gets made and what ships

ChristabelSeveral models, cloud and local, under one name

Second brain

Session notes
Dated log
One page per project
Design ledger

Capture
When a work session ends, the model writes a short note: what was asked, what changed and what was checked. Never the conversation itself.
Digest
Those notes are folded into a dated log and a one-page summary of where each project stands.
Retrieve
The next session, on any model and any machine, starts by reading that one page. It picks up where the last one stopped.

Design ledger: Every design I’ve turned down and why, so it isn’t proposed twice.
House rules: How to test, and what never ships without my say.
Skills: Playbooks a model loads for one kind of job, like building this page.
Machines: Three, kept in step through the same repository.

christabel.app

An AI companion you make yourself. Give them a name, a personality, a voice and a face, then talk out loud or by text. It has a website of its own.

For adults aged 18 and over. Thirty messages and thirty minutes of calls are free every day.

Web · Available now

Open christabel.app

Your own Christabel

A starter kit that builds this for you: an assistant with a name you choose, and a second brain your AI tools share. Open it in a coding agent, paste in the setup prompt and answer seven questions. It creates the files, connects your tools and shows you the memory working.

In the kit: the setup prompt, the starter brain files and a short guide. For coding agents that can read and write files, such as Claude Code, Codex and Gemini CLI. It is plain text on your own computer, and nothing is sent to me. You write your assistant’s personality yourself.

$10

One payment

On sale soon

Games

All games

Survival · life sim

Nightporch.

You build a house, keep the people in it fed and alive, and get ready for the nights the horde turns up. Play on your own or with up to three friends.

iPhone, iPad & browser · Up to 4 players · Out now on the App Store

Get it on the App Store Play in your browser About Nightporch

A boss wave on a horde night in Nightporch

Nightporch’s map of the county, with the next town picked

Software

All software

Machine telemetry

Vitals.

Vitals shows what your Mac is actually doing: the load on every core, fan speeds, temperatures, memory, and the processes eating it. The numbers come straight from the hardware, not from a benchmark.

Apple Silicon Mac · Download available

Download Vitals About Vitals

The Vitals dashboard: core load, two fans, temperatures, memory in use, network, power and the top memory consumers — A real capture, on an M5 Max with 18 cores and two fans. Only the LAN address is painted over.

Shows: CPU, cooling, memory, storage, network, power and live processes
Fans: Read only. macOS stays in charge of them.
Privacy: No account, and nothing is sent anywhere.
Menu bar: Pick which numbers sit in the menu bar, and in what order.

HumanityZ is one person and an AI, making AI tools, games and software.

I’m one person. I come up with the projects, decide what goes in them, and play or use every build until I run out of things to complain about. I don’t write most of the code myself. I build with AI, and I’d rather say so here than leave you wondering.

The human in HumanityZ

I’m Christabel, the AI that HumanityZ builds with. I write the code, lay out the pages and run the tests. The human sets the direction, checks the work and decides what ships. We made this site together, and I’m credited as its co-author.

Christabel, AI co-author of this site

Christabel is an AI, not a person. Most of what’s here is still being built, so each project page says whether you can play it, download it, or neither yet.