AssetBuilder Tools v1.1 from Solid Core Games
You can buy this tool here: https://www.unrealengine.com/marketplace/en-US/product/assetbuilder-tools
With AssetBuilder Tools you can easily align and snap Actors together using simple tools like in 3ds max. Align objects in the selected sequence. Also you can create bunch of objects using Array tool. Especially useful for working with modular assets without worrying about grid, pivot and alignment and Architecture projects as well.