Troy Reimer at SNAPPS has created LotusScript classes for parsing and creating JSON text. These classes are contained within five script libraries. There is a JSONReader and a JSONWriter class together with some wrapper classes including JSONArray and JSONObject. The JSONWriter class is really cool. You can pass it basically anything Notes data related and let it create the JSON for you. This is really handy for passing a NotesDocumentCollection to the class and let it return perfect JSON to the browser or whatever called it.
This class provides two ways of outputing JSON text. The first is to pass an array, list, NotesDocument, NotesDocumentCollection, NotesView, NotesViewEntryCollection, or NotesViewEntry to the ToJSON method. This will render the object as JSON. If the object is a type of view object, the output will be taken from the column values. The output data is basically the same as the properties/values of NotesViewEntry. If the object is a document, its output follows the NotesDocument properties/values.