Description: Balsamiq Wireframes is a rapid low-fidelity UI wireframing tool that allows designers to quickly mockup user interfaces for web and mobile apps. Its simple and intuitive drag-and-drop interface makes it easy to arrange pre-built UI components to map out the structure and layout of an app.
Type: software
Description: Prototype Composer is a free, open source user interface design tool. It lets developers and designers rapidly prototype and collaborate on interface designs using quick sketching features and exporting code snippets.
Type: software
Pricing: Open Source