Due to the Arabic language nature that differs from the English one, concerning the syntactical rules, Arabic books used to be printed without indexes. According to its technique in the computational linguistics, Sakhr developed the morphological indexing tool which is an easy-to-use, and accurate way to create indexes for books and documents. it analyses the text morphologically and then create indexes automatically.

The user can choose to index words according to root, stem, and to include affixes and suffixes or exclude them. Another way to create indexes is that by selecting words that you want to index them your document, and then choose to index them.