What are some alternatives?
When comparing HitLyst and Notify by Facebook, you can also consider the following products
Twisti - Give your Twitter feed superpowers
Hvper - The Internet on one page. Successor of Popurls, the mother of news aggregators.
Blindfold - Make your life on Twitter more positive
News360 - News360 is a smart news app for your phone or tablet that learns what you like and brings you stories from across the web.
Being - See Instagram through the eyes of your favorite celebrities
TheWorldWidePost - TheWorldWidePost.com is a worldwide news aggregation website.