WordPress.org

First i got an awful complicated web shop, proprietary, which in the beginning was free and after two years asked money for. So i was looking for a nice open source successor, having all the bits-&-bolts i wanted. Joomla, also not bad, went second, followed by smartstore, a german .NET based shop with commercial licence. All other platforms were behind, Magento too expensive. Finally, WordPress was best. It seems, my choice was not the worst, i got in contact with lots of people, and contributing is my way to say thanks to all those investing hours and hours developping WordPress.