ProChain is an add-on to Microsoft Project. Installing ProChain will add the functionality required for Critical Chain project scheduling and management—none of the MS Project functionality is disabled. ProChain comes with a project scheduler (the MS Project scheduler and resource leveler is no longer used), a task update interface, analysis tools, views, and reports. Project networks and data are modeled, entered, stored, and exported just as they are when using MS Project without ProChain. The only modeling features that currently are not supported by the ProChain scheduler are split tasks, resource contours, recurring tasks, embedded and interlinked projects (replaced by ProChain Pipeline's program management functionality), and "inactive" tasks in Project 2010 or later.