Workflow - ProcessManager - WebPart - Developer Guide
In this set of Articles I'm going to explain how to create a simple webpart for use within 
Workflow / ServiceDesk ProcessManager.
Workflow - ProcessManager - WebPart - Developer Guide - Inspecting
In this Article I'm going to explain how to inspect other WebParts within Process Manager to see how they are implemented.
Workflow - Plugin - Developer Guide - Deploy
In this Article I'm going to explain how to deploy the Plugin to a Workflow server.
Workflow - ProcessManager - WebPart - Developer Guide - Simple
In this Article I'm going to explain how to create a simple WebPart and display some data on the Process Page inkeeping with the PM theme.
Workflow - Plugins - Create GUID
The 'Create GUID' Plugin allows you to generate a random GUID, which can then either be copied to the clipboard or added to the Primary Model of the current Workflow Project.
Workflow - Plugins - Model Report
The 'Model Report' Plugin will generate a set of webpages detailing your Project, the components used and any information about these.
Workflow - Plugins - Export Translation Strings Plugin
The 'Export Translation Strings Plugin' Plugin ...
Workflow - Plugins - Component Report
The 'Component Report' Plugin generates a set of web pages to display all the Components within Workflow.
Workflow - Plugins - Encryption Keys Generator
The 'Encryption Keys Generator' Plugin allows you to generate a number of different types of keys, Symetrical and Asymetrical.
Workflow - Plugins
Symantec 
Workflow Manager has a number of Plugins available from install.