If you are referring to two or more windows for the same company, yes. You can simply right click on the QBO tab you have open and choose duplicate, then you can navigate to wherever you need to in the new tab. For example, you can have one tab open to customers, and one to reports. You can have multiple tabs open or even separate one tab to its own window and view two windows in split screen just as you can with any other website. This is convenient when you are working on one thing and have to go back to reference another thing. With multiple tabs you don't have to back out of your main working window.