I'm looking for a good classified ad/real estate/car sales type application that supports paid ads, reoccurring billing, multiple up sells like more photos and links, etc...

I have found a few out there but wanted to see if anyone at ABW had any recommendations.

I would like to find a LAMP (Linux, Apache, MySQL, PHP) based application that is not encoded with IonCube or the like as some serious customization will be required.

Any suggestions are appreciated !