How could a site for explaining rap lyrics make good on its $15 million in funding from Andreessen Horowitz? Because it’s also a collaborative text-annotation platform that enterprises are asking for.

Labeling and annotation are the foundation of context setting and the invisible backbone of AI, which are quietly shaping the ...

Larry Hanley, an English professor at San Francisco State University, is the kind of man who aggressively annotates his books. He believes a particularly beautiful verse of poetry deserves to be ...

Readdle’s PDF Expert has been my favorite PDF reader for iPad for a long time now. With Dropbox integration and a clean UI full of powerful options, PDF Expert is the app I rely upon when it comes to ...

In February the W3C approved recommendations to enable annotation on the web. There is a long lineage of annotation tools that enable readers of the web to write comments that overlay content and ...