Sloe Labs · experiments.sloelabs.com

Experiments.

We run a software company on systems we built for ourselves. Every few weeks we take one workflow that actually runs in production, package it, and open-source it — engine free forever, hosted rail free for the first people who ask. Build on it, sell it, break it.

Open engines

MIT, no strings. The moat was never the code — it's the velocity that produced it.

Receipts, not claims

Every drop ships with production evidence — logs, tests, timestamps. If we can't prove it, we don't post it.

Premium rails

Hosting, AI generation, zero-setup. The engine is yours; the convenience is the business.

The drops

Numbered, dated, open forever. Each one existed as internal tooling before it existed as a post.

01
Live now

simkit

Turn your GitHub PRs into playable case studies — interactive simulations of real bugs and fixes, with a canvas engine and an AI rail that goes from diff to deployed sim in about a minute. Your projects become your portfolio.

canvas · AI generation · portfolio
MIT · @sloelabs/simkit
02
Next drop

guides

A phone-first help centre for your product from markdown in your repo. Docs ship in the same PR as the feature — a drift test fails CI when a guide names a button your app no longer has.

docs-as-code · i18n · drift-tested
MIT · @sloelabs/guides
03
In the lab

screens

A nightly screenshot gallery of your entire app. Know exactly what every user on every route sees — before they email you about it.

observability · QA · playwright
MIT · @sloelabs/screens
04
In the lab

documents

Branded quotes, invoices and statements from a JSON payload. No design tool, no template marketplace — one call, one PDF, your logo.

PDF · billing · one endpoint
MIT · @sloelabs/documents

How a drop works

STEP 1

We use it first

Months in production inside our own products. If it didn't survive us, you never see it.

STEP 2

It drops, open

Engine on GitHub, MIT. README tested on a clean machine, timed — if it says 5 minutes, it's 5 minutes.

STEP 3

Concierge tier

Reply to the drop post with your link — we run the hosted rail for the first users, free, personally.

STEP 4

Premium, if earned

When the replies outrun us, the hosted version gets a price. Not before.

© Sloe Labs · Johannesburg / Toronto Yes, it's all one system underneath. Ask us about it sometime.