You can always list alternatives for Facebook, but the problem comes in actually replacing it. Facebook isn't popular for being a well designed website, if you think about it, Facebook is a very bloated and clunky experience. Facebook is popular because that's what everyone uses.

I think the issue isn't about finding alternatives to it, it's convincing the people completely entangled in the Facebook ecosystem why they should jump ship. Another issue comes with, a number of people don't use Facebook, but they use Instagram, which is just a rebranding of the same evil at this point. Getting people to switch from that would prove tough.