Asset Sketcher is a blender addon that lets you paint objects directly into your scene. If you are a level designer or love to create scenes with lots of details, this will be the perfect addon for you. Asset Sketcher lets you populate your scene very quickly. With a variety of settings you can randomize how assets are added to your scene. With some intuitive short cuts you can delete and pick objects directly from your scene, which gives you some extra speed for designing your level. With Asset Sketcher there is no need to place/scale and rotate your objects manually anymore.

http://www.blendermarket.com/products/asset-sketcher-v1