Close your laptop and the screen leans away, blurring and dimming, like an iPhone Duo folding shut. Apple uses a hinge. Mac Duo uses the MacBook's lid angle sensor. Your laptop has neither, so WinDuo reads the angle from your webcam. Free and open source.
Draw any closed shape and Eigendrum solves the real physics: the Laplacian eigenvalue problem for a drumhead clamped at that exact outline, using finite elements, then synthesizes the actual frequencies. No sampled sounds, no faked overtones. Draw a circle and the overtones are ratios of Bessel zeros, because that's what a circle actually does. Includes the Gordon-Webb-Wolpert isospectral pair: two different shapes proven to sound identical. No account, no backend, runs from a single HTML file.
Stitch by Google exports one HTML file per screen. HolyStitch bridges the gap to production.
It's an MCP tool that reads your Stitch project from the API and writes a complete Next.js project to disk in under 5 seconds. No AI in the loop — pure deterministic compiler.
→ Splits screens into React components with correct hierarchy
→ Extracts your exact Tailwind theme
→ Deduplicates shared components
→ Works in Claude Desktop, Cursor, Windsurf
