/e/ is described as 'Fork of LineageOS that aims to be completely free of everything Google. Not only that, but there are a number of goals the developer has in mind for /e/ that more people feel are vital to a mobile operating system' and is a very popular Mobile OS in the os & utilities category. There are more than 25 alternatives to /e/ for a variety of platforms, including Android, Linux, Android Tablet, Linux Mobile and iPhone apps. The best /e/ alternative is Android, which is both free and Open Source. Other great apps like /e/ are LineageOS, GrapheneOS, iodéOS and CalyxOS.