Installation

1. Download the addon from the website. 
2. go to Blender's user preferences. 
3. open the Addons tab.
4. Click Install add-on from the file at the top.
5. navigate to the downloaded zip file and select it.
6. Click install

Features

• Circular Array : make a circular array of selected objects, the cursor's location will be the orienting center of the circular array.
• Linear array : make a linear array of selected objects, the cursor's location will be the endpoint of duplicated models.  
• Mirror : use the cursor's location as a midpoint to mirror the selected objects.
  
• Spiral Array : make a Spiral array of selected objects, the cursor's location will be the orienting center of the Spiral array.
• Curve Array : make a Curve array of selected objects. ( click the object first and then the curve )
• Join : join the mirrored objects that can fix up the inverse faces.
• Sync modifier/Apply modifier : sync/apply the modifiers to the links
• Selected linked/Unlink selected : selected linked objects/unlink selected objects.