Phoenician became one of the most widely used writing systems, spread by Phoenician merchants across the Mediterranean world, where it was assimilated by many other cultures and evolved. The Aramaic alphabet, a modified form of Phoenician, was the ancestor of modern Arabic script, while Hebrew script is a stylistic variant of the Aramaic script. The Greek alphabet (and by extension its descendants such as the Latin, the Cyrillic and the Coptic), was a direct successor of Phoenician, though certain letter values were changed to represent vowels.

As the letters were originally incised with a stylus, most of the shapes are angular and straight, although more cursive versions are increasingly attested in later times, culminating in the Neo-Punic alphabet of Roman-era North Africa. Phoenician was usually written from right to left, although there are some texts written in boustrophedon.