Magento
This item was not updated in last three versions of the Radar. Should it have appeared in one of the more recent editions, there is a good chance it remains pertinent. However, if the item dates back further, its relevance may have diminished and our current evaluation could vary. Regrettably, our capacity to consistently revisit items from past Radar editions is limited.
Adopt
Magento is an open-source e-commerce platform written in PHP. Version 1 was released in 2008. In 2015 version 2 of Magento was released with a completely reworked architecture.
We've been using Magento 2 since the beginning of 2016 for our projects. The programming model (e.g. Dependency Injection), the flexibility (e.g. AOP, Observer Pattern), and the huge amount of 3rd party modules have been the deciding factor for us.