Overview
What is Pencil?
Pencil is a free and open-source GUI prototyping tool that is quick, easy and works across multiple platforms.
In depth
A closer look at Pencil
Pencil is a free and open-source GUI prototyping tool that is quick, easy and works across multiple platforms. Pencil provides various built-in shapes collection for drawing different types of user interface ranging from desktop to mobile platforms. Starting from 2.0.2, Pencil is shipped with Android and iOS UI stencils pre-installed. This makes it even easier to start protyping apps with a simple installation. The list of built-in collections also includes general-purpose shapes, flowchart elements, desktop/web UI shapes, Android and iOS GUI shapes.There are also many other collections maked by the community which are freely available on the Internet.Pencil also supports any exports formats including PNG and HTML. When exporting to HTML you can even define links and behaviours, allowing you to 'walk' clients through the UI mockup with buttons which actually work! This makes it much easier to model to flow of a user interface.Pencil also supports exporting documents into popular formats including OpenOffice/LibreOffice text documents, Inkscape SVG and Adobe PDF.
Requirements
System requirements
Windows (All Versions)
Verdict
Should you download Pencil?
Pencil runs on
Windows 10/11
and is available under the
OpenSource under LGPL
license
— the installer is 69.67 MB.
We’ve catalogued it under
General.
✓
Verified clean. Every Pencil build on SoftLookup is scanned for viruses, spyware, adware, trojans and backdoors. We re-test on every update.
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At a glance
Pencil specifications
- Last updated
- Apr 28, 2026
- Requirements
- Windows (All Versions)
- License
- OpenSource under LGPL
- Operating system
- Windows 10/11
- File size
- 69.67 MB
- Price
- Free
- Page views
- 452
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