WikiTree is described as 'The WikiTree community is growing a free worldwide family tree. The site is 100% free. There are no premium memberships. All content is contributed by the users and you can keep copyrights. You can also keep modern profiles private or even hidden altogether' and is a popular Genealogy tool in the home & family category. There are more than 25 alternatives to WikiTree, not only websites but also apps for a variety of platforms, including Windows, Mac, Android and iPhone apps. The best WikiTree alternative is Gramps, which is both free and Open Source. Other great sites and apps similar to WikiTree are FamilySearch.org, MyHeritage, Ancestry and webtrees.
It's free and public, so you don't need to change a lot