Salesforce1 Simulator
Launch Salesforce1 in a mobile simulator Chrome App
Salesforce1 Simulator in the Chrome Web Store
Click on the device's home button to see options for resizing, minimizing, closing, and toggling whether it should always be on top.
Click and drag anywhere other than the screen to move the window.
Note: this is NOT an official Salesforce project. Salesforce is not responsible for this extension.