The aim of the ALPS 2015 Workshop is to provide an international forum for the doctoral candidates and post-docs participating in the LASERLAB-EUROPE project and the EXTATIC Programme involved in the research on application of laser plasma sources of X-rays and extreme ultraviolet (EUV) in various fields of technology and science, including nanolithography, micro- and nanoprocessing of materials, modification of polymers for biocompatibility control, radiation damage of solids, imaging of nanostructures, microradiography and tomography, radiobiology, photoionization of small quantum systems, etc. The main technical issue to be considered and discussed during the workshop will be the practical application of laser plasma sources of X-ray and EUV that are developed under the Laserlab Europe project and demonstration of their capabilities and suitability for potential users.