(Context) The use of software applications generally in their adoption is not always effective. In particular, in project management, where there are some difficulties in the context of medium-sized companies in Lima to use project management tools. (Objective) Study the factors related to the characteristics of the software, the organization and the users for the acceptance of the management software. (Method) A survey based on a study conducted on the same topic was designed and executed. (Results) Response was obtained from 77 project managers. (Conclusion) Factors such as functionality, the size of the organization, the complexity of the project and the use of software are the most representative. In the study also finds that: (i) exists a strong and significant relationship between the use of software and the perception of the project manager's performance and (ii) factors such as training, experience and educational level have no effect.