Bahaism
http://www.foreignpolicy.com/story/cms.php?story_id=3835

The article lists the Baha'i Faith as the second-fastest-growing religion in the world, after Islam, with the following comment:
Bahaism
Growth rate: 1.70 percent
Adherents: 7.7 million
Behind the trend: High birthrates in India
Areas to watch: Bahais are spread throughout the world, but a good chunk—around 1.8 million—live in India. The Bahai faith, an offshoot of Islam, was founded in 1863 in Iran by Bahá’u’lláh, who claimed to be the latest in a line of prophets stretching from Abraham to Jesus Christ to Mohammed. Today, Bahais often suffer persecution in the Middle East; it probably doesn’t help matters that the world headquarters of the Bahai faith are in Haifa, Israel.
It is based on a Christian project:
*Growth rates over the period from 2000 to 2005; all figures from the nondenominational World Christian Database, a project of the Center for the Study of Global Christianity at Gordon-Conwell Theological Seminary.