Fastrepl is a small software studio between Seoul and San Francisco, designing interfaces where humans and agents work together.

Trusted by Y Combinator, Pioneer Fund, TRAC, Krew Capital, Blast Club, Tobi Lütke, Kaz Nejatian, Zach Lloyd, Henri Stern, Thomas Wolf, James Hawkins, Dane Knecht, and

Currently working on

AI notepad that gets things done.

anarlog

AI notepad for private meetings.