Utopia Documents Alternatives

Utopia Documents

Utopia Documents is a free PDF reader that connects the static content of scientific articles to the dynamic world of online content.
With a brand new look-and-feel that blends real-time updates with the typographic elegance of published articles, Utopia Documents brings up-to-date information directly to your desktop.

Get immediate access to an article's metadata and browse the relationship it has with the world at large. Generate a formatted citation for use in your own work, follow bibliographic links to cited articles, get your hands on a document's data at the click of a button.
Various extensions provide links to the blogosphere, online data sources and to social media sites, so you can see what other researchers have been saying about not only the article you're reading, but its subject matter too.