uStage is a simple way to create a staging or preview environment using a single instance of Umbraco.
Using it is simple:
1. Install the package
2. Set your Preview url using the "Culture and Hostnames" dialog.
When accessing your site via a url marked as "Staging", the draft content will be displayed instead of the published content.
Note: This is a beta release. It currently does not respond to rollbacks (only saves and saveandpublish). We plan to address rollbacks in the next version.