The CreaTools software is a framework for both end-users and developers. It provides on the one hand ready-to-use medical image processing applications and on the other hand components, libraries and a development/execution framework allowing you to create your own applications. This is a very simplistic representation of the system:
End-users, the ready-to-use applications (image tools) will give you the possibility to visualize images, filter them or contour regions of interests with only a few clicks.
Developers, using the developer tools and the existing libraries you can
easily create your own pipeline applications with the CreaTools scripting language (bbs) and based on the existing ready-to-use components (script developers)
develop your own CreaTools packages and even participate to the CreaTools development (package developers)
manage all your developement projects (be it CreaTools or not) based on the CMake philosophy (library developers)