This is the KCNcrew Pack September 15 2013 Issue.
It’s like Serial Box, which has SN’s but KCN also has cracks and patches. It would be best to have both of these collections, as this often has serials you cannot find in Serial Box. Unlike Serial Box, no readers are required. Just open the dmg file, drag and drop the application to where you like. However, there is no way to view what serials, cracks and patches are new in this issue as compared to the previous like Serial Box.