Anabaptist Scholars - a network of scholars working from within the Anabaptist/Mennonite tradition, which requires an annual subscription fee to join
Confession of Faith in a Mennonite Perspective -  adopted by the General Conference Mennonite Church and the Mennonite Church in 1995, now used by Mennonite Church Canada and Mennonite Church USA
Faith in a Fragmenting World - Columns by Adela McKay
John Howard Yoder’s Home Page - online selection of Yoder's unpublished, out-of-print and hard-to-find writings
Mennonite Brethren Confession of Faith

Mennonite Confession of Faith - brief version of the confession of faith adopted by Mennonite General Conference in 1963
Mennonite Stew - dictionary of terms related to things Mennonite, including Mennonite doctrinal positions
Mennonites and Missions - from Third Way Cafe