Gramps is described as 'Free Software Project for Genealogy, offering a professional cross-platform genealogy program, and a wiki open to all' and is a very popular Genealogy tool in the home & family category. There are more than 25 alternatives to Gramps for a variety of platforms, including Windows, Web-based, Mac, Android and Linux apps. The best Gramps alternative is FamilySearch.org. It's not free, so if you're looking for a free alternative, you could try FamilySearch.org or WikiTree. Other great apps like Gramps are MyHeritage, Geni, MacFamilyTree and Heredis.