JSTWRLD Start a project
Past — where it comes from
Model No. 003 — Still in service

JSTWRLD

A machine that keeps building
Manufactured by JSTJO
Los Angeles, California · Est. 2024

We build keys from keys we already had.

Past

The machine

What built us. Everything we knew before we knew what to do with it.

Present

CTRL

The press. The one part you actually hold — and it's in the name of everything we make.

Future

The engine

What it drives toward. A better one than the last, every single time.

Nothing here started from scratch. Every tool came out of an older one, or out of something that broke and taught us why. That's the whole method.

Present — the press

The Key

Six worlds, one engine. Read this the way you'd read the key on a map — every one of them is a CTRL chord, and that was never a naming convention. It took years to notice we'd been saying the same thing over and over.

CTRL + T

Think

AI that's actually affordable to run. Several models behind one interface, routed to whichever can answer for the least money.

  • JSTJO.AI
CTRL + B

Build

Tools that do one job and keep doing it offline. Single-file software for jobs no commercial app bothers to cover.

  • LINED.
  • CTRL+PASS
  • Custom tools
CTRL + P

Play

Games and instruments that run in a browser tab. No installs, no accounts, no store to get past first.

  • CTRL+TWIST
  • JST+DJ
  • CTRL+MIX!
CTRL + M

Make

Things you can hold. Parametric models, printed in small batches, tested until they stop breaking.

  • CTRL+POP!
CTRL + G

Go

Websites for small businesses that don't have one. We build it first — you decide from the finished site, not a mockup.

  • CTRL+GO!
CTRL + W

Water

Five percent of revenue set aside for clean water. No partner picked yet and nothing paid out — the ledger goes public when it starts.

  • CTRL+WTR
Present — on the bench

What's on the board

Every project, in whatever state it's actually in.

CTRL+TWISTLive

A speedcube trainer that runs in the browser.

LINED.Live

Offline logging tool that runs from a single file.

JSTJO.AILive

Multi-model chat platform with a free tier.

JST+DJBuilding

Two decks in a browser tab, plus CTRL+MIX! as the game version.

CTRL+POP!In testing

A 3D-printed can tab opener. Still printing revisions.

See every project →
Present — for hire

Point it at your problem

The same hands that built everything above are available for work.

A website

For a business that doesn't have one yet. We build it first and send you the finished site — you decide from something real.

  • See it before you pay
  • Flat price, no monthly lock-in
  • The domain stays in your name
See how it works

Something custom

The one job your business does differently, turned into software. Runs in a browser, keeps working when the wifi doesn't.

  • Offline-first by default
  • Priced per job, no retainer
  • You own what we ship
Tell us the problem
Next — under construction

Where the engine drives

Nothing here is finished. That's the point — the engine's whole job is to still be running next year.

Now compilingCTRL+WRLD console
In the print queueCTRL+POP! rev. 3
Next to shipJST+DJ cue points
Waiting onWildcard DNS
Long gameThe water ledger, public

Nobody can take
this from you.

We build the keys. What you unlock with them isn't ours to decide. Tell us what isn't working — if it's not something we should take on, we'll say so and point you somewhere better.