GUI Prototyping

Pencil – GUI prototyping tool

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.

Pencil is shipped with Android and iOS UI stencils pre-installed. This makes it even easier to start protyping apps with a simple installation. Popular drawing features are also implemented in Pencil to simplify the drawing operations.

There are built-in shape collections including general-purpose shapes, flowchart elements, desktop/web UI shapes, Android and iOS GUI shapes.

Pencil also supports connectors which can be used to “wire” shapes together in a diagram. A collection of flowchart shapes are also available for drawing diagrams.

Key Features

  • Bitmap and vector drawing tools.
  • Layers.
  • Camera.
  • Export animations to QuickTime and Flash formats.

Website: pencil.evolus.vn
Support: Wiki
Developer: Pascal Naidon, Patrick Corrieri
License: GNU GPL v2 or later

Pencil
Click image for full size

Pencil is written in JavaScript. Learn JavaScript with our recommended free books and free tutorials.


Related Software

GUI Prototyping Tools
PenpotDesign tool that’s web based. Penpot requires a browser, that’s it.
InkscapePowerful design software with flexible drawing tools
PencilEasy GUI Prototyping with a good range of built-in shape collections
AkiraDesign application for prototyping
WorkbenchPrototype with GNOME technologies
mydraftWireframing tool

Read our verdict in the software roundup.


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