Workbench Moderation

Workbench Moderation adds arbitrary moderation states to Drupal core's "unpublished" and "published" node states, and affects the behavior of node revisions when nodes are published. Moderation states are tracked per-revision; rather than moderating nodes, Workbench Moderation moderates revisions.

About Workbench

Workbench is a suite of modules which provide easier content management for content administrators. Each of the "Workbench" modules has been tested to work with the main Workbench module, and with the other modules in the Workbench suite. The Workbench suite is modular, allowing site builders to build the workflow that best suits the content administrators on their site. The Workbench suite provides authors, editors, and publishers with a unified interface for managing content relevant to them. It allows people to focus on content, rather than on learning Drupal.

Workbench Moderation may be run as a stand-alone module with no dependencies; however, certain features are available only when the Workbench module is also enabled.

Drupal 7

The 7.x-3.x branch is the recommended version and the successor of the 7.x-1.x branch. If you're using a 7.x-1.x version you should consider updating to the 7.x-3.x as it fixes following security issue: SA-CONTRIB-2016-060
The 7.x-2.x branch integrates with State Machine and is just minimally maintained.

Drupal 8

Since Drupal 8.2.x this module is in core as "Content Moderation". If you are starting a new project or adding a content moderation workflow to an existing site using Drupal 8.2 or higher do not use this module, use Content Moderation in core instead.

Workbench Moderation has a stable release for Drupal 8 and is fine for use in existing production sites. Bug fix releases still occur. There is no impetus to move to content moderation in core for sites built before Drupal 8.2.