Some see that to be a weakness in Wesleyan theology. I rather think that it is our strength.
The following "categories" are intended only to help in your ease of finding what you would might like to utilize. If there are errors in categorization, please email me and I will get the correction made as quickly as possible. I also would be happy to add any other sources that fit the Wesleyan theology category.
Bible Missionary
Church of Christ in Christian Union
Church of God (Anderson)
Church of God (Holiness)
Church of the Nazarene
Christian Resource Institute Featuring the writing of Dr. Dennis Bratcher and others, this is a wonderful look at Bible interpretation, worship aids, Sunday School lesson assistance and other Wesleyan theological themes.
Holiness Data Ministry A collection of holiness titles offered on CD by Duane Maxey.
Nazarene General Headquarters While not a theology site as such, this gives information about the COTN and its ministry around the world.
Free Methodist
Independent Wesleyan groups
Missionary Associations; Independent and Non Denominational
Parachurch Organizations
Pilgrim Holiness
Salvation Army