Maybe you should make use of the Binance app for that, they will get you notified of their new listings, but you can also google search for that, most of the projects are being advertised firstly on twitter, telegram before they got to exchanges, they also have their own sites in which when you make a research about them you will discover their platform and other channels they make use in disseminating informations, if you can get some recommended apps from the Internet, then use them and give a try at your own risk.