MonthlEE is a simple ExpressionEngine plugin that takes in a number from 1 to 12 and returns the corresponding month name.

This plugin can be helpful in turning monthly/yearly archive urls into nicely formatted month names for headers. For instance, if you have the url http://www.example.com/archive/2011/06, month name can help create a nicely formatted header like:

Archives for {exp:month_name month="{segment_3}"} {segment_2}

Which will output Archives for June 2011

MonthlEE can be downloaded from its addon page on Devot-EE