Web-based remote access using a browser is a feature of all the enterprise 'server' products: Enterprise Desktop, Cloud Server and the whole Terminal Server for Linux family. These products include the NoMachine Web Player.

To reach a NoMachine server where there is no Web Player running, you can connect using any NoMachine desktop or app for mobile installed on the device you are connecting from.

To get started with web-based remote access, take a look at the tutorial in the Support section of the website: 
https://www.nomachine.com/support/documents/getting-started-with-web-access.