Sharing data in between multiple angular applications

I am having multiple angular2 projects. (not multiple apps in one angular project). For an example Client Management,Search Criteria, Result page, Shopping Cart, Booking Management etc.. Each items are separate angular2 projects & deploying as separate a war files.

My requirement is what is the better way to pass the data in between multiple apps. We can send data through the URL as query params and also we can store them on browser's local storage. Is there any security risk of storing data on local storage or what is best solution for this?

Thanks