ReadKit is a full-featured read later and RSS client that supports services from Instapaper, Pocket, Pinboard, Feedly, Fever, NewsBlur, Feedbin, etc. Developed by Webin (Balazs Varkonyi)
License: Commercial
The Old Reader is a web-based RSS reader that emphasizes simplicity and social sharing features, while ReadKit is a more advanced, offline-capable RSS reader with powerful organizing tools and cross-platform support.