Product · doppelganger.md
DOPPELGÄNGER.md
DOPPELGÄNGER.md is one open Markdown file that teaches any AI your voice. Samples, tone rules, and hard bans in six required sections. Paste it, attach it, or @
Who builds it
Jeroen's intro on X
I’m 33. Solo founder from The Netherlands. Looking to connect with founders & indie hackers.
Read it on X ↗Other products from Netherlands
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