pencil
An open-source diagramming and GUI prototyping tool built on Electron for creating diagrams and mockups.
What is pencil?
Pencil is an open-source diagramming and GUI prototyping tool that enables users to create diagrams, wireframes, and mockups. It is built on Electron for cross-platform compatibility and addresses performance and scalability issues found in earlier versions. The tool supports features like custom font embedding, tree-like page management, and improved PDF export.
Designers, developers, and technical writers who need a free, open-source tool for creating diagrams and GUI prototypes without relying on proprietary software.
Pencil offers a completely free and open-source alternative to commercial diagramming tools, with a focus on community contributions, cross-platform support via Electron, and scalable document management for large projects.
Overview
The Pencil Project's unique mission is to build a free and opensource tool for making diagrams and GUI prototyping that everyone can use.
Use Cases
Best For
- Creating wireframes and mockups for software interfaces
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