WikiTree.com is described as 'The WikiTree community is growing a free worldwide family tree. The site is 100% free. There are no premium memberships' and is an website in the Home & Family category. There are more than 25 alternatives to WikiTree.com, not only websites but also apps for a variety of platforms, including Windows, Mac, Linux and iPhone. The best alternative is Gramps, which is both free and Open Source. Other great sites and apps similar to WikiTree.com are MyHeritage (Freemium), FamilySearch.org (Free Personal), webtrees (Free, Open Source) and Ancestry (Freemium).