I want to develop a offline web app which will work on multiple platform(PC,Android). This is a basically a product display web app so that each product will have image,video,details of product etc. For development of this web app HTML5 is the choice. I will copy web app files to each device so that I could run it offline. But here I need a back-end so that I could delete outdated product and add new products(which will have details,image,video). Is there anyway so that I could add/delete product from one device and copy these files to all other devices.
I have come across HTML Appcache, using this i can build normal php site and using manifest i can store it in browser appcache for offline viewing. But this requires internet connection in each device and access the web app through browser.
I would like to know if there is any other way I could do this without keeping files in web server.