[Inspiration and ideas] The inspiration comes from words :" unpretentious ". The author's understanding of tool software: first, it is a tool, the value of tools lies in its effective and reliable problem solving. As a tool even out of the network,even out of the crowd even in the navigation of the ship or the mountain without people should be able to use. In a variety of online version of the popular products today, boldly launched this offline version of accounting software, tools back tools,