Rivered is described as 'web-based multi-platform feed reader that does one thing really well: lets you read content from sites you follow in an uncluttered ‘River of News’. A River of News is a continuous stream of content sorted by most recent first' and is an website in the News & Books category. There are more than 100 alternatives to Rivered, not only websites but also apps for a variety of platforms, including Android, Windows, iPhone and iPad. The best alternative is Feedly, which is free. Other great sites and apps similar to Rivered are Tiny Tiny RSS (Free, Open Source), NewsBlur (Freemium, Open Source), Reeder (Paid) and Feedbin (Paid, Open Source).
Feedly is a better way to organize, read and share the content of your favorite sites. It weaves the content from the RSS feeds of your favorite websites into a fun magazine-like experience and provides seamless integration with social networks.
Tiny Tiny RSS is an open source web-based news feed (RSS/Atom) reader and aggregator, designed to allow you to read news from any location, while feeling as close to a real desktop application as possible.
NewsBlur is a personal news reader that brings people together to talk about the world. It shows you the original site and allows you to read stories directly off the site while keeping track of what you read. It also filters and highlights stories you like and dislike.
News360 is a next-generation news reader that gathers news from more than 10,000 different online sources, and presents them in an innovative visual fashion, aggregating different articles and media, and letting you see all sides of a story.
Flowreader is a web-based RSS reader that brings users both web news and social accounts feeds. One can organize categories, share and post directly from Flowreader page to Twitter and Google+ accounts.