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pencil_viewer

The premium Open Source alternative to Pencil Pro

🎯 Best for:Users needing a lightweight, browser-based viewer for Pencil files.
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MITLicense

What is pencil_viewer?

Replaces proprietary .pen file viewers and desktop-only prototyping tools. Operates entirely client-side for zero-latency editing and privacy-focused hosting.

Tech Stack
TypeScriptUI/UX & Prototyping

Why pencil_viewer?

  • • Client-side
  • • Zero hosting cost
  • • Privacy focused

Limitations

  • • Limited editing
  • • Single file format
  • • No cloud sync
4/17/2026
Last Update
0
Forks
0
Issues
MIT
License
Financial Leak Detected

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Competitor Cost
-$1,440
/ year (est. based on Pencil Pro)
Self-Hosted
$0
/ year
Team Size10 Users
150+
Launch Detailed Calculator
SAVE 100%

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