HTML5 rendering OF addon on Raspberry PI 2 hardware

Hi all,
we are looking for HTML5 rendering OF addon on Raspberry PI 2 hardware.

All projects around (or I did not search enough) have "early devel, broken, nonfunctional, ..." in comments

There are several approaches that various posts suggest

• WebKit + QT -> offscreen rendering -> OF
• WebKit + GTK -> offscreen rendering -> OF
• CEF -> offscreen rendering -> OF
• ... same as above except rendering via GL -> OF
• ...

Some key requirements we have are
- no X
- able to run multiple HTML5 addons at the same time
- can render HTML5 from remote server or local file system (HTTP://,HTTPS://, file://)
- rendering speed is not concern
- run on Raspberry PI 2, Debian Jessie, C++ (gcc 4.9)

Any experience / comments / pointers ?

Thanks.