Independent software studio

Native, local-first software for the Mac.

Genkei Labs builds developer tools and personal productivity software that run on your machine, stay out of your way, and never treat your data as the product.

Products

What we’re building

Prowl

DEVELOPER TOOLS · CLI

End-to-end testing for native macOS apps and web apps — from the same declarative YAML. Write a hunt, run it from the terminal, and get screenshots, traces, and reports automatically.

name: save-note
steps:
  - click: "id=newNote"
  - type: "Buy milk"
  - assert: "text=Saved"

Sentwise

MACOS · MENU-BAR APP

Your follow-up email is drafted before you’re back from the coffee machine. Sentwise learns your writing voice from your own Sent mail and drafts email on your behalf — every draft waits for your approval.

Draft readyjust now

Next steps from today’s call — drafted in your voice, waiting for your approval.

How we build

Local-first

Your data lives on your machine, not on our servers. We build software you can trust with what matters.

Built for the Mac

From the menu bar to the terminal, our tools are made to feel at home on macOS — not ported to it.

Human in the loop

Nothing sends, ships, or changes without your approval. Our software drafts; you decide.