The scientific monograph is devoted to the development of a methodology for evaluating start-up projects in conditions of risk and uncertainty, based on a combination of expert experience and various factors for evaluating start-up projects using fuzzy logic, fuzzy sets, and neural fuzzy networks. The scientific monograph develops and tested fuzzy and expert mathematical models that allow: quantify startup projects and teams of their developers, assess the risks of start-up projects, assess the security risks of start-up projects, evaluate and select start-up projects for investor purposes, evaluate commercial projects of various origin and evaluate the rating of the crowdfunding platform.