Bulk Approval is a sandboxed solution for SharePoint 2010, this feature allows you to approve items (more than one) in a single click.
SharePoint default item approval allows users to approve items one at a time, this is often inconvenient when we have to approve more than one item. This feature will provide you the necessary tool to overcome the issue.
ScreenShots :
Prerequsites:
SharePoint 2010
Installation Guide:
Download the .wsp file from this page, and upload it to the solutions list on your sharepoint site, and activate the site feature "P3.Modules.Sharepoint.BulkApprove"