| Name | Description | Type | Package | Framework |
| Attributes | The Attributes class stores name value pairs. | Class | opennlp.tools.dictionary.serializer | Natural Language Processing (OpenNLP) |
| Dictionary | This class is a dictionary. | Class | opennlp.tools.dictionary | Natural Language Processing (OpenNLP) |
| DictionarySerializer | This class is used by for reading and writing dictionaries of all kinds. | Class | opennlp.tools.dictionary.serializer | Natural Language Processing (OpenNLP) |
| Entry | An Entry is a StringList which can optionally be mapped to attributes. | Class | opennlp.tools.dictionary.serializer | Natural Language Processing (OpenNLP) |
| EntryInserter | Interface | opennlp.tools.dictionary.serializer | Natural Language Processing (OpenNLP) | |
| Index | This classes indexes StringLists. | Class | opennlp.tools.dictionary | Natural Language Processing (OpenNLP) |