Junichi Sato

Junichi Sato

KosshiKosshi
Indie maker. Building tools for makers.
#96570259 followers0 following
>10,000All time
221 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
Tastemaker
Gone streaking
Gone streaking
Gone streaking 5
Gone streaking 5

Maker History

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

Forums

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2mo 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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