Running a single Linux application or an application in rootless/seamless or floating window mode is possible with any of the products that support the virtual desktop functionality like Workstation, Small Business Server, Terminal Server and Enterprise Terminal Server.

To run a Linux application in floating window, the option 'Create a new custom session' must be selected from the panel presented to you once you have logged in.

From there you will then be able to indicate the path to the application on the remote host and select whether to run the application in floating window or as a virtual desktop (see https://www.nomachine.com/DT04O00140#4.2. for more details about running virtual desktops and custom sessions).