Pencil Project

Overview

Pencil is built for the purpose of providing a free and open-source GUI prototyping tool that people can easily install and use to create mockups in popular desktop platforms. It includes built-in shape collections for desktop, mobile (Android/iOS), and web interfaces, plus flowchart elements.

Key features

• Built-in Shape Collections
• Diagram Drawing & Flowcharts
• Export to PDF, SVG & PNG
• Interactive Prototypes