Wikipedia
WeRelate.org is a wiki genealogy website, that provides genealogy tools and data. It bills itself as the world's largest freely licensed genealogy wiki, with almost 5 million wiki pages. Its information is free, and the site is non-commercial and nonsectarian. WeRelate had over 2.5 million person pages, over 930,000 family pages and 44,000 images in Jan 2014.
WeRelate.org is supported by the Foundation for On-Line Genealogy and the Allen County Public Library in Fort Wayne, Indiana. The site runs on the MediaWiki software.
Discussions are currently on-going about merging WeRelate into WikiMedia, where it would operate alongside Wikipedia as a sister project (http://meta.wikimedia.org/wiki/WeRelate). Such a merge would make WeRelate the de facto standard open genealogy database for non-living ancestors, in a field that currently has many confusing alternative projects. Discussions currently concern privacy (living people entries), sourcing and original research issues. As a completely open database however WeRelate cannot handle privacy controls required for living individuals' data. Many users thus use semi-commercial sites such as WikiTree in conjunction with WeRelate which are able to control living people's private data and make contact with distant living cousins, whilst keeping dead ancestors' data as creative commons. Both sites use GEDCOM data which can be freely copied between them for non-living ancestors.