Abstract: There are provided a method and a system of software behavior analysis. The method comprises: retrieving data sources related to a software program and mapping a list of behaviors characterizing the software program. Additionally, the method can comprise analyzing the list of behaviors to obtain at least one trait of at least one of the behaviors, and/or transcoding the list of behaviors to corresponding natural language descriptions and presenting the natural language descriptions of the list of behaviors to a user on a Graphical user interface (GUI). There are further provided a method and a system of testing changes between different versions of a software program based on the software behavior mapping and analysis.