This module allows you to give a "moderate nodes" permission to a user role. Users with this permission may see a list of content (restricted using the node access table via db_rewrite_sql so they cannot see content they are normally prohibited) at /admin/content_moderator. Within this list they can either approve posts to move them out of moderation, or put them into moderation to remove them from public view (important note: only some modules, including book and poll, check the moderation status before displaying content).
For Drupal 6, this module has been incorporated into OG itself.
The og_actions module is a collection of 5 actions for use with the actions module and workflow module. These actions facilitate the use of organic groups with the actions and workflow modules, allowing administrators to create rules to modify the organic group information for specific nodes.