The Biblical Counseling Foundation produces the Bible study materials, Self-Confrontation and Living Victoriously, as well as running courses in biblical discipleship and counseling. Biblical Counseling Foundation offers a deep discount for non-US orders.
Intensive Care Ministries runs Inductive Bible Study training courses online and via dvd. They can also travel to teach weekend and week-long seminars, and they conduct a teacher training course once a year.
World Missionary Press produces free evangelistic tracts, booklets, and discipleship materials in over 340 languages. These can be read online or can be delivered to the United States or overseas.
Der Gute Botschaft Verlag is a ministry with Bibles, Christian books, tracts, and flyers in 90 languages. They provide their literature free of charge "in limited quantities for distribution at bookstalls, refugee camps, markets, retirement homes, hospitals, prisons, etc." They ask for those interested in larger quantities to contact them.
Disciples are Made is a three-part series produced by Calvary Chapel and Navigators. Titles included in the series are Growing Strong in God's Family, Deepening Your Roots in God's Family, and Bearing Fruit in God's Family. These can be used in small groups or in one-to-one discipleship.