In last years a series of large intelligent information management and decision support systems (“intelligent software tools”) has been developed at the MPA Stuttgart (MPA - Staatliche Materialprüfungsanstalt - State Institute for Testing of Materials), Germany. The projects have been sponsored mainly by power plant industry (electric utility companies, usually) and by The Commission of the European Communities within its framework programs like BRITE and SPRINT. This paper highlights some of these projects and intelligent software tools developed within these projects for analysis and assessment of remaining life, damage evolution and similar issues relevant for the modern power plant life management. Tools developed in two large European projects (Sprint SP249 and BRITE BE5935), for component life assessment and inspection planning, respectively, will be presented more in detail. Tools developed in SP249 cover issues like large high temperature materials database, large hypertext documentation base, various methods for life prediction (e.g. the those based on German TRD standards, A-parameter analysis, oxide thickness measurements, hardness-based methods, etc.). Tools developed in BE5935 support planning of annual inspection in power plants. They suggest answers to questions like when to inspect, using which techniques, to what extent, etc. Practical examples given in the paper illustrate abilities, usability and applicability limits of these systems.