modr8 provides an administrative interface for managing content in moderation.

Allows you to preview content, as well as approve or deny, and send messages to the author informing them of your choice.

This module adds back that capability and also prevents posts that are in moderation from showing up in lists, on the /node page, etc., unless the user is the node's author or unless the user has the "administer nodes" or "moderate content" permission. This is NOT an access control module, however, so posts that are in moderation can still be viewed if a user knows the path (URL) corresponding to that post.

or

Moderation

It allows moderators to review all posted content while already published. Included Ajax based functionality allows the moderators to preview the content and to change status like published, moderated, promoted, sticky without having to leave the page. A separate page provides a log, listing all status changes with who and when it was changed.

and also take a look at this Maestro module

modr8 provides an administrative interface for managing content in moderation.

Allows you to preview content, as well as approve or deny, and send messages to the author informing them of your choice.

This module adds back that capability and also prevents posts that are in moderation from showing up in lists, on the /node page, etc., unless the user is the node's author or unless the user has the "administer nodes" or "moderate content" permission. This is NOT an access control module, however, so posts that are in moderation can still be viewed if a user knows the path (URL) corresponding to that post.

or

Moderation

It allows moderators to review all posted content while already published. Included Ajax based functionality allows the moderators to preview the content and to change status like published, moderated, promoted, sticky without having to leave the page. A separate page provides a log, listing all status changes with who and when it was changed.

and also take a look at this Maestro module