Looking to Move from IPS

I wont get too far into things but im considering moving from IPS as a long term customer because 4 is taking too long and I'm not sure it's what i expected. I need something to start a new project and xenforo looks very appealing.

I have many questions but the big one for now is about additional apps... gallery, blogs etc.

I have been looking at avforums.com's transition to xen and note they have a great blog/content homepage and subsite.

Can anyone help with what add-on they are using?

Many thanks,
Glad to be here.