[nereid666]

I think this is libreoffice inside a remote-desktop like, html client. Like VNC. I fact the same company eyeOs is offering Microsoft office "on cloud", something similar as http://guac-dev.org/ My opinion is that this is not html5 editor, It is very high demanding hungry resources consuming and complex architecture. Or I am missing a new release libreoffice HTML5 version?

[fbartels]

Actually not VNC, but Spice: http://www.eyeos.com/en/eyeos/technology#clienteweb

[janvdberg]

You can watch a bit about what is actually is here: http://ftp.fau.de/fosdem/2016/janson/scaling-and-securing-li...