Contributed modules

Workflow

Project page: http://drupal.org/project/workflow

The workflow module enables you to create arbitrary workflows in Drupal and associate them with entities. A Workflow is made up of Workflow States. Moving from one state to another is called a Workflow Transition.
Transitions can be associated with Actions. You may use the Rules module or core's Trigger module to react to transitions and states.

The Workflow module

Getting started with the Workflow module

The Workflow widget

The Workflow module provides a configurable widget for changing the State of an entity.

Workflow & Actions, Triggers and Rules

Workflow provides actions, which can be used by the modules Trigger and Rules

Workflow on the web

These are some references, scripts, video's from the internet

Developer documentation for Workflow module

This is how you develop your own code for Workflow module.

Related projects

Workflow 8.x

Guide maintainers