From ICT4D Wiki
http://www.itu.int/osg/spu/statistics/DOI/index.phtml
[T]he WSIS Plan of Action prioritizes evaluation and tracking of countries’ progress in adopting ICTs.
The Plan of Action also calls for the development of a composite index called the "ICT Development (Digital Opportunity) Index" to measure the magnitude of the digital divide and follow up the implementation of the Plan's objectives, goals and targets
Developed by the International Telecommunication Union and other international and national agencies.