Your best bet is to contact someone at zmags and see what they can tell you about their product.
Following just one of the samples they provide, a left click on it indicates it is using the Flash Player.
Okay, what about Adobe Digital Publishing? Does it use Flash? Does it work on iOS/Android/Windows as well as desktop?
Adobe Digital Publishing can be used through InDesign - also remember that you have to pay per download for each ADP item (if it's in a store), so it's not like you pay once, and it's free. As far as I know it doesn't publish as Flash for iOS or Android, it publishes to a native format - in most cases the ADP files tend to be a bit larger than some competitors - but then again most of the top 10 web magazines are currently made with ADP using InDesign. All the information is on the Adobe website: http://www.adobe.com/sea/products/digital-publishing-suite-single.html
Sorry maybe I didn't answer your question properly - if you want to turn it into a website or page (not an app in the Appstores) then I think you are better off going for something like Zmags - especially since it's true multi-platform. The only case where ADP makes sense is if the original assets are in InDesign / PDF (less conversion) and you are planning to sell it in appstores. A lot of magazines can be converted and displayed as HTML5, this is what some of the other providers are doing.
Here is an article comparing 10 popular platforms: http://www.fpomagazine.com/digitaledition/ - one that might be interesting in Issuu. Some of these feature plugins for InDesign if you prefer. I remember researching this a while back, the client ended up going with ADP since their original assets were 250 page InDesign documents and the deadline was quite tight (as usual!).