Save-it is a second released package on the Unity Assets Store. It's cool tool to save and load whole scene in just a second. This great, easy and fast tool is available on the Unity assets store. You are able to choose one of the three stream modes. Every mode is specified and unique in file streaming, database creating etc. More on the store page and in the documentation.

Product available here: Unity Asset Store - Save-It Pro


Last version is V5. Showcase of the previous version can be found below. Other showcases and reviews can be found on the store website.