PowerWF provides complete authoring and testing of Service Manager Workflows. Based on Windows Workflow and fueled by PowerShell, PowerWF brings Service Manager to new levels. It's a unique authoring tool that turns every PowerShell Snapin, CMDLET, and Module into tool box items that can easily be used to create powerful workflows. Even homegrown and third party PowerShell Modules and CMDLETs are treated as first-class citizens in PowerWF.
PowerWF includes a PowerShell interpreter that can convert existing PowerShell scripts into workflows which can then be extended using both PowerShell and non-PowerShell activities. Workflows can be tested directly from PowerWF using a full suite of debugging tools, including Break-Points and Tracking. Workflows can even be executed one step at a time.
v2.3 allows you to publish workflows directly to SCSM via MP import and workflow binary distribution or you can produce a Windows Workflow Foundation activity that can be used in the SCSM Authoring Tool workflow designer.
Here're some PowerWF videos, more coming soo!:
Download: PowerWF for System Center