Junichi Sato

Junichi Sato

KosshiKosshi
Indie maker. Building tools for makers.
#96570254 followers0 following
☀️ 2 day streak
>10,000All time
203 KP

About

Solo indie maker based in Japan. Left my job in 2021 to build tools for people who make things. Currently making Kosshi (an outliner for thinkers and writers), Ohaco (a 3D block app), and Sankome (a palm-sized mini robot).

Badges

Tastemaker
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Maker History

  • Kosshi
    KosshiSimple, fast outliner for Mac and iPhone.
    May 2026
    • 🎉
    Joined Product HuntApril 6th, 2026

Forums

Junichi Sato•

9h ago

Kosshi - Simple, fast outliner for Mac and iPhone.

Kosshi is a simple native outliner for macOS and iOS. Fast and focused outline editing.
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