My opinion about Renault CAN KLINE TOOL:

There is a cheap interface made by chinese…under name FNR PROGRAMMER ( ford nissan renault )

That FNR is china cracked software of key programmers tool + elm interface and it cant really be compared to renault ecu tool .
FNR key programmer is an affordable, high performance, PC to vehicle programming interface,working by obd2, supporting different ford cars from 1997 to 2011. With the ford key programmer,you can clear the keys and add new keys.

Can program megane2, laguna2, clio card/keys and that is about it.

Its a great device for Renault cars. incredible.