Caretta Software Products

GUI Design Studio

Create UI Designs and Software Prototypes Without Coding

GUI Design Studio is a fully featured application user interface design and rapid prototyping tool that requires absolutely no coding. It is equally suitable for creating desktop, mobile and Website application designs.

GUI Design Studio Screenshot

$49 - $149 per license

  • Save time when creating user interface design mockups and presentation prototypes
  • Fully featured screen editor
  • Over 120 built-in design elements
  • Annotate designs with ease
  • Create reusable, modular design components
  • Graphically describe application workflow to run your prototype
  • Automatically generate specification documentation
  • Create single file project distributions for use with the free Viewer
More Details

GUI Design Viewer

Review User Interface Designs and Prototypes

GUI Design Viewer (otherwise known simply as the "Viewer") allows anyone to freely view designs created with GUI Design Studio and run them as an interactive prototype with the same capabilities.

GUI Design Viewer Screenshot


  • Open any GUI Design project or individual design file
  • Open specially created single file project distributions
  • Automatically runs the prototype and closes according to project options
  • Supports different visual style and colour schemes for visualisation
  • Freely available and redistributable
More Details

Icon Express

Quick and Easy Editor for Creating Application Icons

Icon Express is a no nonsense icon editor that's extremely quick and easy to use. It has all of the basic features you need to create small icons for your applications or Websites and integrates seamlessly with GUI Design Studio.

Icon Express Screenshot


  • Pencil, line and basic filled or unfilled shape drawing
  • Text drawing in any font
  • Flood filling with dithered colour option
  • Selective colour replacement
  • Flip and rotate
  • Cut, copy and paste
  • Paste external graphics to create an icon
  • Unlimited undo/redo
  • Supports 16, 256 and True colour icons
More Details