Best way to install local responsive html5?

Hi RHelpers!

We're using RH 2017 (build 13.0.2.344). Our company is starting to make a shift from distributing .chm files to distributing responsive HTML5 outputs. This is somewhat uncharted territory for us.

We will provide a public server-side help, but since not all our users will have an internet connection, we are also want to provide a locally installed fallback of the same output. Our product will try to access the server-side help first, but if there's no internet connection, it will open up the local help in their default browser.

Our developers want to know if there's a preferred way to install this type of local html5 output on a user's computer. We use a Wix installer for our product. They're investigating something called Heat for this local help install, but before we go that route for all our help projects, they wanted me to ask around and see what approaches others here are using and what you might recommend.

Another thing to consider. We also need to support merging other helps for different components (we call them add-ins) into our primary help. The user can choose to install or uninstall these different add-ins. Once installed, we'll install that add-ins' html5 help outputs as well. Those add-in helps need to get merged into the primary help.

Thanks in advance!