"Now I exhort you brothers, through the name of our Lord Jesus Christ that you should all speak in agreement, and that there should not be divisions among you, but that you may be fittly united in the same mind and in the same line of thought." 2 Cor. 1:10
According to the Watchtower Society one of the characteristics of apostasy is that it leads to division and fragmentation. What they mean, of course, is all of Christendom's schisms are a result of apostasy. What they never tell you is that schism has often arisen from their own ranks. And never would they admit that it was a result of their own apostasy.
Be that as it may, the following link gives all the breakaway groups from the Watchtower Society that belong solely to those who come under the auspices of Bible Students. See
http://www.biblestudents.net/history/daughters_tower.htm#part42
Since all the Bible Student groups are accounted for here, it would be interesting to make a list of all other groups that have arisen from Jehovah's Witnesses. I can think of at least five: the True Witnesses of Jehovah (in Romania) and the Kitawala (in Africa), the Associated Jehovah's Witnesses for Reform on Blood (not sure if this is the exact name) and the group that uses the name Jah and E-watchman's group (I think they call themselves the New Wave Jehovah's Witnesses). If you know of others please include them.