Today, Arabic calligraphers are becoming very scarce, in a world
dominated by electronic arts and media. As most today's digital
arts were developed in the west, there are more and more challenges
that face the Arabic calligraphy. Very few, if any, computer
applications are designed to help developping the Arabic
calligraphy and conserve its uniqueness compared to the Latin typo.
One little exception that I'm aware of is a software called "Kelk"
by SinaSoft (www.kelk.ws) which is basically an Arabic calligraphy
software that allows you to compose Arabic words and designs in
several Arabic calligraphy styles.