Winds - Open source & beautiful RSS reader
NewsBlur - NewsBlur is a personal news reader that brings people together to talk about the world.
Cappuccino - Cappuccino is a framework which makes it easy to create advanced web apps.
Lenns.io - The feed reader for people that want to be in control
Elytra - Simple RSS Reader for iOS
Inoreader - Dive into your favorite content. The content reader for power users who want to save time.