RESource, an Australian Religious Education site, deals with the ethics of evangelisation and the issues of religious freedom. Designed for senior secondary school.
Many paths to the one goal, a comparative analysis of the major world religons from a Christian perspective.
Adherents.com references published statistics for over 4,200 religions, churches, denominations, etc
Vatican II Statement on the Relation of the Church to Non-Christian Religions.
Official Denominational Web Sites.
Origins of Non-Christian / origins of Christian Religions.
BBC Guide to the Religions of the World - Introducing Christianity - basic Christianity