Daily-Deals is a project mainly written in PHP, it's free.
A PHP Symfony webapp for creating daily discounts, giveaways similar to Groupon, Living Social, and more
Daily Deals is a web application built using PHP Symfony for creating a deals site similar to Groupon, Living Social, and more. The code is open-source and you are free to use it with no warranty or guarantees but if you would like to contact Us, we would be happy to support it, license it, and deploy it in a super-charged production environment.
If you would like to contribute please contact dailydeals[at]missionsolutions[dot-com].
Enjoy!
~Sap