| Name | Description | Type | Package | Framework |
| AbstractWikiParser | Class | net.yacy.data.wiki | Yacy | |
| BlogBoard | Class | net.yacy.data | Yacy | |
| BlogBoardComments | Class | net.yacy.data | Yacy | |
| BlogBoardComments .CommentEntry | Class | net.yacy.data | Yacy | |
| BookmarkDate | Class | net.yacy.data | Yacy | |
| BookmarkHelper | Class | net.yacy.data | Yacy | |
| BookmarksDB | Class | net.yacy.data | Yacy | |
| BookmarksDB .TagComparator | Class | net.yacy.data | Yacy | |
| BookmarksDB .TagSizeComparator | Class | net.yacy.data | Yacy | |
| DidYouMean | People make mistakes when they type words. | Class | net.yacy.data | Yacy |
| DidYouMean .headMatchingComparator | Class | net.yacy.data | Yacy | |
| DidYouMean .wordLengthComparator | wordLengthComparator is used by DidYouMean to order terms by the term length This is the default order if the indexSizeComparator is not used | Class | net.yacy.data | Yacy |
| Diff | This class provides a diff-functionality. | Class | net.yacy.data | Yacy |
| ListAccumulator | This class is used to store content and properties of several blacklists. | Class | net.yacy.data.list | Yacy |
| ListManager | Class | net.yacy.data | Yacy | |
| MessageBoard | Class | net.yacy.data | Yacy | |
| MonitoredReader | Class | net.yacy.data.ymark | Yacy | |
| TablesRowComparator | Class | net.yacy.data.ymark | Yacy | |
| Translator | Wordlist based translator Uses a Property like file with phrases or single words to translate a string or a file | Class | net.yacy.data | Yacy |
| URLLicense | Class | net.yacy.data | Yacy | |
| UserDB | Class | net.yacy.data | Yacy | |
| UserDB .AccessRight | Class | net.yacy.data | Yacy | |
| WikiBoard | Class | net.yacy.data.wiki | Yacy | |
| WikiCode | Provides methods to handle texts that have been posted in the yacyWiki or other parts of YaCy which use wiki code, like the blog or the profile. | Class | net.yacy.data.wiki | Yacy |
| WikiCode .ListType | Class | net.yacy.data.wiki | Yacy | |
| WikiCode .Tags | Class | net.yacy.data.wiki | Yacy | |
| WikiParser | Interface | net.yacy.data.wiki | Yacy | |
| WorkTables | Class | net.yacy.data | Yacy | |
| XMLBlacklistImporter | This class provides methods to import blacklists from an XML file (see http://www. | Class | net.yacy.data.list | Yacy |
| YMarkAutoTagger | Class | net.yacy.data.ymark | Yacy | |
| YMarkCrawlStart | Class | net.yacy.data.ymark | Yacy | |
| YMarkCrawlStart .CRAWLSTART | Class | net.yacy.data.ymark | Yacy | |
| YMarkDate | Class | net.yacy.data.ymark | Yacy | |
| YMarkDMOZImporter | Class | net.yacy.data.ymark | Yacy | |
| YMarkEntry | Class | net.yacy.data.ymark | Yacy | |
| YMarkEntry .BOOKMARK | Class | net.yacy.data.ymark | Yacy | |
| YMarkHTMLImporter | Class | net.yacy.data.ymark | Yacy | |
| YMarkHTMLImporter .STATE | Class | net.yacy.data.ymark | Yacy | |
| YMarkImporter | Class | net.yacy.data.ymark | Yacy | |
| YMarkJSONImporter | Class | net.yacy.data.ymark | Yacy | |
| YMarkMetadata | Class | net.yacy.data.ymark | Yacy | |
| YMarkMetadata .METADATA | Class | net.yacy.data.ymark | Yacy | |
| YMarkTables | Class | net.yacy.data.ymark | Yacy | |
| YMarkTables .PROTOCOLS | Class | net.yacy.data.ymark | Yacy | |
| YMarkTables .TABLES | Class | net.yacy.data.ymark | Yacy | |
| YMarkTag | Class | net.yacy.data.ymark | Yacy | |
| YMarkUtil | Class | net.yacy.data.ymark | Yacy | |
| YMarkXBELImporter | Class | net.yacy.data.ymark | Yacy | |
| YMarkXBELImporter .XBEL | Class | net.yacy.data.ymark | Yacy | |