There are many other types of religions that may or may not consider themselves to be Christian. I will provide links here to the Christian congregations that have the largest number of members (over 250,000). The ones that don't have links, can be obtained by using a search engine on the Internet, if you desire.  If you would like to suggest another link, please let me know using the feedback form.

Baptist, American Baptist Association
    Link to American Baptist Churches Web Pages 
Baptist, American Baptist Churches in the USA
Baptist, National Baptist Convention of America, Inc.
Baptist, National Missionary Baptist Convention of America
Baptist, National Primitive Baptist Convention, U.S.A.
Baptist, Progressive National Baptist Convention, Inc.
Baptist, Southern Baptist Convention
Brethren, Evangelical Free Church of America 
Calvary Chapels in the United States
Catholic, Eastern Rite Catholic/Uniate Churches
Catholic, Roman Catholic Church
Christian, Christian Church (Disciples of Christ)
Christian, Christian Churches and Churches of Christ
Christian, Churches of Christ
Church of God (Anderson, IN)
Community, International Council of Community Churches
Congregational, United Church of Christ
Episcopal, Episcopal Church
Evangelical Free Church of America
Fundamentalist, Baptist Bible Fellowship International
Fundamentalist, Baptist Missionary Association of America
Fundamentalist, Christian and Missionary Alliance
Holiness, Church of the Nazarene
Judaism, Conservative Judaism
*Judaism site that shows a live video CAM of the wall in Jerusalem
Judaism, Orthodox Judaism
Judaism, Reform Judaism
Lutheran, Evangelical Lutheran Church in America
Lutheran, Lutheran Church —Missouri Synod
Lutheran, Wisconsin Evangelical Lutheran Synod
Methodist, African Methodist Episcopal Church
Methodist, African Methodist Episcopal Zion Church
Methodist, Christian Methodist Episcopal Church
Methodist, United Methodist Church 
Mormons, Church of Jesus Christ of Latter-Day Saints
On Line Seminary Schools
Orthodox, Armenian Church
Orthodox, Greek Orthodox Archdiocese of North America
Orthodox, Orthodox Church in America (Russian Orthodox)
Pentecostal, Assemblies of God, General Council of
Pentecostal, Assemblies of God, Missouri
Pentecostal, Bible Way Church of our Lord Jesus Christ, WW
Pentecostal, Church of God (Cleveland, TN)
Pentecostal, Church of God in Christ
Pentecostal, Full Gospel Fellowship of Churches and Minist.
Pentecostal, Pentecostal Assemblies of the World, Inc.
Pentecostal, United Pentecostal Church International
Presbyterian, Presbyterian Church in America
Presbyterian, Presbyterian Church (U.S.A.)
Reformed, Reformed Church in America
Salvation Army
Seventh-Day Adventist
Shakers (local to me)
bulletShaker manuscripts
bulletWatervliet Shaker Village
bulletHancock Shaker Village

Wesleyan Church