erickong/penecho

Think with AI beyond the chat box. A shared canvas for handwriting, equations, diagrams, and spatial reasoning.

2 best points · 1 comments · 1 Hacker News post · 2,515 GitHub stars · View on GitHub

Hacker News discussions

• PenEcho: An Open-Source Canvas with AI (2 points, 1 comments, by mkw5053, 2026-07-18)