The Psalter According to the Seventy
For the End: A Psalm of David.
Here you can access individual chapters and kathisma of the The Psalter According to the Seventy . Kathismata range from 1 to 20. Chapters range from 1 to 151 (there's an extra Psalm in the Septuagint.)
Prayers from the Great Horologion are copyright 1997 Holy Transfiguration Monastery, Boston, MA, and are used with permission.
Translations of troparia and kontakia from the complete Menaion trans. Br. Isaac Lambertsen, published by The St. John of Kronstadt Press are used by permission.