So you are a developer with multiple WordPress products on the market? Allowing your visitors to test your products before purchasing is a good idea. FBar is one of many plugins you can use to allow your visitors to switch between your products. It has a responsive test tool and supports unlimited demos.
FBar lets you display social share buttons, enable/disable purchase button, and use affiliate links. You can customize it with your own logo. The Responsive Test tool supports desktop, tablet, and mobile devices.
This is a commercial plugin by an Elite Author. You can download it here.