News API - Get live headlines from a range of news sources
Listr - Listr lets you explore some of the best lists on Twitter, curated across your favorite categories.
Google News - Comprehensive up-to-date news coverage, aggregated from sources all over the world by Google News.
Refined Twitter - A browser extension that improves the Twitter experience
Unfiltered.news - What the world is talking about, visualized graphically
Vicariously.io - Create Twitter lists based on the follows of other users