There are many kinds of system packaging tools, such as immutable S& etc. EasySysprep, Deep Newprep, Belief in Nowprep, NPreTooler of good friends, etc. in R & ampIT sky. The basic principle of packaging tools is the same, but the auxiliary functions are different. The tools developed in the past are a little hard to use, with few auxiliary functions, and many details need to be handled manually when packaging. Now the new tools have perfect auxiliary functions, humanization, simple operation, and pursue one-button packaging, which is convenient for users to use. EasySysprep and Nowprep are the most popular tools on the Internet.