released his new Arma tool today in the BI forums
The Object Browser should come in handy if you're taking reference screenshots, and want to quickly go through a bunch of objects, having the same orientation.
But it's also a quick and easy way to have a look at everything that's available (not just the stuff that's in the editor menus).
It displays everything that's in cfgVehicles (which are infantry units, vehicles, buildings, etc.) as well as all the weapons that have visible models. (The collections used are not read from stored lists, but are read dynamically from the game resources. That way any future expansions or any current installed addons will be automatically included.)
Download this new tool from this page
Click below for some screenshots.