Web content management systems are usually a set of server scripts and applications that automate many of the tasks of administrating and updating a web site. eGrail is a company based on the premise that these tools will one day become as common as word processing programs–probably true, but not at the price they are asking for.
I have three pages about about web annotations. One is about Foresight’s CritSuite and, the now defunct, Third Voice. Another is about Microsoft’s smart tags. And the last one is about TOPtext. The idea has become so common that the W3C is now finally issuing standards for this facet of Ted Nelson’s strange idea.