This essay deals with estimation methods while implementation of Type application software. After the introductory part, which stipulates objectives of the work and descriptions of how to achieve them, is a general description of basic features of the project. After this part, there are characterized basic attributes of estimates, various approaches to their formation and problems that can accompany estimation activity. This work also describes diversification of information systems according to their way of development on Individual application software and Type application software. Then it defines their mutual differences while implementation. Next chapter resolve the first objective associated with exploration of implementation methodol...