The Greek alphabet was based on the Phoenician alphabet.

The Phoenician alphabet was the inspiration for the Greek alphabet.

The Cyrillic alphabet is derived from the Greek alphabet, with the addition of several characters from the Hebrew alphabet.

The Greek alphabet, an evolution of the Phoenician. An evolution of the Greek alphabet was the Latin.

The letter in the Greek alphabet following psi is omega. Omega is the 24th and final letter of the Greek alphabet.