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 popular app in the Home & Family category. There are more than 25 alternatives to Gramps for a variety of platforms, including Windows, Online / Web-based, Mac, Android and Linux. The best alternative is WikiTree.com, which is free. Other great apps like Gramps are webtrees (Free, Open Source), MyHeritage (Freemium), FamilySearch.org (Free Personal) and Ancestry (Freemium).
OneFam is a Family History networking application which enables family members to create, share and preserve their family history. Applications are available on mobile, web and desktop. In addition, OneFam offers DNA testing and genealogy research.
Pedigreeable enables anyone to create beautiful family tree art -- show the generations of your family in fun and modern ways. These printable family trees make ideal gifts for births, weddings, Father's Day, Mother's Day, and many more special occasions.
LifeLines is a genealogy program to help with your family history research. Its primary strengths are its powerful scripting language and the ability easily import and export information in the GEDCOM format.