BKTools recently announced the launch of its first Macintosh software product, Strainer. The new application has been designed to help users quickly rename groups of files. Users can define a set of rules that determines which characters to remove or replace in a filename and then drag a group of files to be modified. Each filename will be edited based on the users preferences and if users are not happy with the outcome they can choose to undo the changes. A free demo of the software is available or a full license can be purchased for $14.