See sub menus for specific sites.
One world tree
The theory that we are all connected, somewhere, somehow, so should all appear only once in any one tree.
Collaboration on the information presented is fully encouraged, with discussions usually possible for where information differs
Fitting in this category are:
WikiTree, WeRelate, Geni, OneGreatFamily, Ancestry.com’s worldtree (?check name?)
Individual trees fully under your own control.
In this category:
Individual Ancestry.com trees, RootsWeb’s WorldConnect, , MyHeritage, FamNet, GenesReunited