| BufferedIterator | Creates an iterator from another iterator that will keep the results of the inner iterator in memory, so that results don't have to be re-calculated. |
| ExtractIterator | Creates an iterator from another iterator that extract the requested column or property based on a path |
| FilterIterator | Creates a filtered iterator from another iterator. The filtering is done by passing a callback function to each of the elements and taking them out if it does not return true. |
| InsertIterator | This iterator will insert values into a property of each of the records returned. |
| MapReduce | Implements a simplistic version of the popular Map-Reduce algorithm. Acts like an iterator for the original passed data after each result has been processed, thus offering a transparent wrapper for results coming from any source. |
| NestIterator | A type of collection that is aware of nested items and exposes methods to check or retrieve them |
| NoChildrenIterator | An iterator that can be used as an argument for other iterators that require a RecursiveIterator but do not want children. This iterator will always behave as having no nested items. |
| ReplaceIterator | Creates an iterator from another iterator that will modify each of the values by converting them using a callback function. |
| SortIterator | An iterator that will return the passed items in order. The order is given by the value returned in a callback function that maps each of the elements. |
| StoppableIterator | Creates an iterator from another iterator that will verify a condition on each step. If the condition evaluates to false, the iterator will not yield more results. |
| TreeIterator | A Recursive iterator used to flatten nested structures and also exposes all Collection methods |
| TreePrinter | Iterator for flattening elements in a tree structure while adding some visual markers for their relative position in the tree |
| UnfoldIterator | An iterator that can be used to generate nested iterators out of a collection of items by applying an function to each of the elements in this iterator. |
| ZipIterator | Creates an iterator that returns elements grouped in pairs |
