This document discusses wireframing tools for mobile application development. It recommends keeping wireframes simple with features like quick editing and multiple format saving. Several software options are listed, including Adobe Photoshop, BluePrint, Keynote and PowerPoint. Balsamiq is highlighted for its simple templates, ease of use, template availability, export options, support community and cross-platform availability. Key differences between wireframes and storyboards are outlined, with wireframes focusing on functionality and flows, while storyboards are more visual and artistic.