Annotator | Open Knowledge Foundation

Annotator | Open Knowledge Foundation: "Annotator
Open-Source Annotation Toolkit for Inline, Online Web Annotation

Simple javascript (+backend) library for web-annotation. Main goals were and are:

Annotation of arbitrary text ranges
Annotate any web (html) document
Easy to use — 2 lines of javascript to insert this in your web page/app etc
Well-factored and library-structured — easy to integrate and easy to extend"