Aeschylus

The Oresteia Trilogy: Agamemnon, the Libation-Bearers and the Furies [Dover]
Prometheus Bound [Dover]
The Seven Against Thebes [Dover]

Aristophanes

The Birds [Dover]
Lysistrata [Dover]

Barrie, James M. 

What Every Woman Knows [Dover]

Calderón de la Barca,  Pedro 

Life Is a Dream [Dover]

Capek, Karel 

R.U.R. [Dover]

Chekhov, Anton

The Cherry Orchard [Dover]
Five Comic One-Act Plays [Dover]
The Sea Gull [Dover]
The Three Sisters [Dover]
Uncle Vanya [Dover]

Congreve, William 

The Way of the World [Dover]

Euripides

Bacchae [Dover]
Medea [Dover]
The Trojan Women and Hippolytus [Dover]

Glaspell, Susan, Trifles (1916) [Off-site]

Goldsmith, Oliver

She Stoops to Conquer [Dover]

Gorky, Maxim

The Lower Depths [Dover]

Ibsen, Henrick (1828-1906, Norwegian)

Jarry, Alfred

Ubu Roi [Dover]

Jonson, Ben 

Volpone [Dover]

Kalidasa

The Recognition of Sakuntala [Dover]

Marlowe, Christopher

Dr. Faustus [Dover]

Molière

The Bourgeois Gentleman [Dover]
The Misanthrope [Dover]
Tartuffe [Dover]

O’Neill, Eugene 

Anna Christie [Dover]
Beyond the Horizon [Dover]
The Emperor Jones  [Dover]
The Long Voyage Home and Other Plays [Dover]
Ten "Lost" Plays  [Dover]

Pirandello, Luigi

Right You Are, If You Think You Are [Dover]
Six Characters in Search of an Author [Dover]

Racine, Jean

Phedra  [Dover]

Rostand, Edmond

Cyrano de Bergerac  [Dover]

Schiller, Friedrich

Mary Stuart  [Dover]

Shaw, George Bernard 

Arms and the Man  [Dover]
Heartbreak House  [Dover]
Major Barbara [Dover]
Pygmalion [Dover]

Sheridan, Richard Brinsley

The Rivals [Dover]
The School for Scandal [Dover]

Sophocles

Antigone [Dover]
Electra [Dover]
Oedipus at Colonus [Dover]
Oedipus Rex [Dover]

Strindberg, August

The Father [Dover]
Miss Julie [Dover]

Synge, J. M. 

The Playboy of the Western World and Riders to the Sea [Dover]

Webster, John

The Duchess of Malfi [Dover]

Wilde, Oscar

An Ideal Husband [Dover]
The Importance of Being Earnest [Dover]
Lady Windermere’s Fan [Dover]