Group buying sites are a big rage at this time. Internationally Groupon.com the largest and most well-known. Massive Coupon is an open source program that allows you to free a own group buying site can develop similar to Groupon.
UPDATE: The site of the developers of Massive Coupon is unfortunately no longer active. The software is no longer developed and offered.
Massive Coupon is an open source script that allows you to a ready-made group buying site can install on their own server room. Can then you as the owner himself daily deals add. Visitors can then perform this action " s view and order if they are interested.
Massive Coupon has the following characteristics:
Massive Coupon screenshots
You can free download Massive Coupon and safe install the latest trial or new full version for Windows 10 (x32, 64 bit) from the official site.