Hypothes.is, a project receiving support from the Foundation to develop a tool for annotating digital scholarly content, has recently announced partnerships that are expected to increase the prevalence, and the adoption by scholars, of the practice of online research annotation. As an open-source product, Hypothes.is can be customized to the requirements of existing research platforms. Publishers currently experimenting with versions of Hypothes.is include JSTOR, eLife, and Cornell University's arXiv.
Jeffrey M. Perkel, "Toolbox: Annotating the Scholarly Web," Nature, December 3, 2015, volume 528, p. 153–154, http://www.nature.com/news/annotating-the-scholarly-web-1.18900.
"Annotating the Scholarly Web," The Andrew W. Mellon Foundation, June 2014, https://mellon.org/resources/news/articles/annotating-scholarly-web/.
Jeremy Dean and Katherine Schulten, "Skills and Strategies: Annotating to Engage, Analyze, Connect and Create," New York Times, November 12, 2015, http://nyti.ms/1HEvZ1w.