Rentalot

Rentalot is free, with no restrictions on its use. It includes the full back end administration interface, and the front end of the component can display availability tables on your site. The plugin allows you to place availability tables anywhere in any article.

Rentalot for Joomla 2.5 and 3.x
Rentalot User Guide Version 4.01
Rentalot Component Version 4.03
Rentalot Plugin Version 4.01.03