Autodesk® AutoCAD® provides a few commands (by default) capable of performing distribution and alignment functions. These commands are very complex, making the simple task of aligning and distributing something time-consuming and inefficient.
Align&Distribute is a plug-in for AutoCAD that provide a set of commands very similar to align and distribute commands present in other graphics software such as CorelDral®, Photoshop®, Inkscape®, and Illustrator®. Through this command you can easily and quickly align or distribute many types of objects with different shapes in the X, Y and Z axis.
The single limitation in this TRIAL version is that the command affects only 7 objects per selection. For a larger quantity get the paid version here.
For more details about this tool, access http://arsenaltechno.com/en/align-and-distribute/.
IMPORTANT: This plugin is not compatible with AutoCAD 2013 or lower.