Books is a handy, free (GPL) program available exclusively for Mac. It falls under the category of productivity software with a subcategory of catalogers. S ince its addition to our selection of programs and apps in 2007, it has garnered 21,771 downloads, with 4 downloads in the past week. The latest version of the program is 3.2.3, and it was last updated on February 20, 2009. Books is compatible with Mac OS X and prior versions, and it is available in English. This lightweight software requires minimal storage space compared to other productivity software options. It has gained popularity in several countries, including France, Italy, and the United Kingdom.