The paper is devoted to description of the software, which made as web-application, for collection, storing and processing the data of creep and long term strength, including the case of creep-fatigue interaction. The short review and analysis of problem is presented. The technology for minimization of creep data storing as well as the architecture of web-application is discussed. Software contains the possibility of imaging three parts of data, which are creep curves, long term strength curves and diagrams of limiting amplitudes and stresses. The values of temperature, stress, grade and literature reference to the data are demanded database fields. The examples of the work with database and with plots are presented.