Here are some other notable Sophocles tragedies:
* Antigone: This play explores the conflict between individual conscience and the law of the state.
* Oedipus at Colonus: This is the third play in the Oedipus trilogy and depicts Oedipus's final years.
* Ajax: This play tells the story of the Trojan War hero Ajax, who is driven to madness by his defeat.
* Electra: This play tells the story of Electra, who seeks revenge for the murder of her father, Agamemnon.
Ultimately, the "greatest" tragedy is subjective, but Oedipus Rex stands out for its complex themes, powerful characters, and enduring relevance.