In oXygen 18.0 we released a new HTML5-based online help publishing system called WebHelp Responsive. It has the ability to adapt to any device and screen size to provide an optimal viewing and interaction experience. Nearly all aspects of its layout can be customized and it also includes a variant that allows online users to provide feedback in your documentation.
A short video demonstration covering the basic functionality and customization options is available here: http://oxygenxml.com/demo/Webhelp_Responsive.html.
As an example, our Oxygen 18.0 user's manual is published from DITA using the new WebHelp Responsive system. The DITA 1.3 specification available on our web site was also published using this modern WebHelp system.
For now you can choose between nine beautiful skins for the tiled display:
and nine skins for the tree display:
I hope you'll all enjoy it and we are looking forward to any feedback or improvement suggestions you may have for it.