Thread Grid addon will allow you to get Grid of thread on selected forum.
How does this addon work ?
this addon pickup the first attachment of the thread so you can get a good layout for forum
additional requirement : thread thumbnail addon By xenbros
Verision 2.0.0 - for xenforo 2.1.x or newer
Verision 1.0.2 - for xenforo 2.0.x
Finally my site is live need help ping there don't forget to make review