I am working with bilgiyazilim since many years now - it's my favourite software for all kinds of technical projects. The main benefit we get from using this tool is to control our project process efficiently as well as creating new features or fixing bugs quickly without any extra effort required by manual task execution. It has very good user interface which allows anyone who does not have programming skills can use the system easily. Sometimes you cannot drag some elements but they are available under "edit" option so no problem about getting them done manually. So far there was nothing much bad i could say abt their product but if your looking for such kind of tools then go ahead otherwise do try others also before going forward to buy one. If needed give free trial version first - its cheap enough and gives most of what u need for testing purpose only. We used this tool mainly for making reports like graphs etc., controlling different aspects of each.