HTC Edge Launcher 1.00.989317

From version 1.20.1015906:

Edge Launcher helps give you fast access to your favorite apps, contacts, and settings with just one hand. Simply squeeze and you can instantly open a customizable circular-shaped menu that keeps what's important and most useful to you always within a thumb's reach. You can set up to five menus!
Features:
• Compatible with HTC Edge Sense
Squeeze to open the menu, and swipe to switch panels
• Customizable menu
Add your favorite apps, contacts and settings to the menu
• Customizable size
Adjust the panel size to fit your hand
• Smart suggestions
Find your most frequently used apps and contacts easily when you set it up