Welcome to Open Islam!
Open Islam is an online utility for studying Quranic words and their roots. There are two main sections you can access from the navigation at the top of the site:

Browse

In the browse section, you first select a surah to read. As you are reading, you can click on any word to see other instances of that word in the Quran, or to find the root of that word.

Roots

In this section, you will get a list of root words whose derivations appear in the Quran. You can click on any root to see a list of words derived from that root. Then, you can click any word to see where it appears in the Quran.

Resources and Thanks

The Quranic Arabic Corpus

This site uses the Quranic Arabic Corpus provided by corpus.quran.com for a word-by-word breakdown, as well as categorization of words into roots, forms, etc.

Tanzil.net

This site uses the Arabic Quranic script as well as translations from Tanzil.net.