How does ReadCube compare to Mendeley? Currently I use Mendeley. I have heard some stuff about ReadCube, but they don't have a Mendeley quick import tool, so… before I go through the hassle of resetting up my library with them, I wondered how it compared to Mendeley. What are its extra features? What is missing? How smooth is it to use, how widely adopted is it, that sort of things…
From a short comparison of the features listed on the website here is list of Mendeley features that ReadCube doesnt have:


In-text citation insertion and formation: Mendeley has Word and other plugins, ReadCube only exports to Endnote and "your favorite citation software"
Sharing and collaboration features
ReadCube is only a desktop app (no web app), and it doesn't work on Linux
Mendeley has an open API to query its huge database


On the other hand:


ReadCube is used as the online reader for a few publishers: Nature, Frontiers and Wiley.
ReadCube suggests personalized article recommendations (dont know if they're good, though)