roots, words, ayahs containing derivatives

This is amazing, but it is in Indonesian (?). What is written is authentic or not? However, as a root, word, derivative, ayah resource, it may be good.

You click on any word in the text of the verse, and it gives you the root of the word and displays Ayahs containing its derivatives in the Quran. Other info in Indonesian is not decipherable by me.

http://quran.bblm.go.id/