PHPMarketPlace is a PHP & MySQL classified ads script. The design is very simple and lightweight. It was designed to allow website owners to create a classified ad marketplace on their website with the same ease of use as Craigslist. The PHP code is well documented, the layout is CSS driven, and there are only 3 small MySQL tables. This allows site owners to easy deploy this script on their websites, change the look, add functions, add fields to the table - whatever they want. Because Craigslist is the inspiration for PHPMarketPlace, there isn't a cumbersome user database to manage. Sellers edit or delete their listings via their email. Free, you can use the script on as many websites as you like. Build sites for clients, build websites for yourself. The only restriction is that you do not resell the script as your own, but you can use it to build as many websites as you like. This listing says pay, but that is because it won't let me set it to free. It is GPL license.