Workflow - Tools - Server Extensions Configurator
Start > Programs > Symantec > Workflow Designer > Tools > Server Extensions Configurator
Workflow - Plugins - Protirus - Workflow Explorer
The 'Workflow Explorer (Running As)' checks if Workflow Explorer is running and who has it open (the owner).
Workflow - Plugins - Protirus - Task Tray Tool
The 'Task Tray Tool' plugin opens the Task Tray Tool app so the icon shows in the Task Tray ready for use, it was added to make it easier to find.
Workflow - Plugins - Protirus - Recycle App Pools
The 'Recycle App Pools' plugin allow you to Recycle a chosen App Pool via a Form.
Workflow - Plugins - Protirus - Restart IIS
The 'Restart IIS' plugin will restart IIS on the Workflow box using the currently logged in user..
Workflow - Plugins - Protirus
Symantec 
Workflow Manager has a number of Plugins available from install.
Workflow - Plugins - Protirus - Powershell
The 'Powershell' plugin opens a file picker, filters on Powershell file extensions (**.ps1*, *.psm1, *.psd1) and then runs the chosen file with custom param ($project) that can be used in your Powershell script.