• TAdvTreeView (descendant of TCustomTreeView)
• TAdvDBTreeView (descendant of TAdvTreeView)

Features:

• full drag & drop support (whent property DragAndDropEnabled set to True)
• fastest creating tree data structure, just "from scratch", using keyboard or built-in popup menu
• properties ColorWhenFocused and FontColorWhenFocused let You change colors of the control when it receives focus, without a need of writing additional code anywhere in Form

in TAdvDBTreeView
• three build methods:
  • tbmParentFieldSort
  • tbmDatasetFilter
  • tbmProcessRawDataset
• ID field can be of any text data type
• null value for root allowed
• tree is built dynamically, "on demand" of expanding node
• very fast node locating when setting a KeyValue
• property MultiParentAllowed: if set to True then You can attach same nodes to varies Parents
• and much more - see DEMO application (using TObject descendants class hierarchy)
• see History.Txt for changes

DBFlyTreeView is the direct descendent from FlyTreeView. It allows you to use all features of FlyTreeView + DB-aware power of DBFlyTreeView.

DBFlyTreeView is easily printable. Use DrawCell method for draw any array of cells directly to printer, Metafile or Bitmap canvas.

With DBFlyTreeView you can easily change displayed data hierarchy: simply change Keyfield or Parent field to change record relations. Also you can filter zero-level records using RootValue, an initial value of Keyfield for zero-level nodes. Imagine having more than one data hierarchy in one table.

DBFlyTreeView allows your users change DB-aware node's properties - ImageIndex, StateIndex and SelectedIndex. DBFlyTreeView also supports cascading updates of StateIndexes on change of Node.StateIndex (if you toggle checkbox on some node the states of its children will be changed as well as the state of a parent node).

Four types of in-place editors (simple, DropdownList, dropdown checklist and ellipsis button editor) allow you to edit data conveniently.

DBFlyTreeView is written entirely using Delphi and does not require any extra DLL's or OCX's.
 
Trial (work while IDE is running)
Source: On purchase/registration
Price: $139.95

Now you to use any visual Delphi control as dropdown, organize multiple, hierachical, editable master-detail, lookup and custom views, its easy even for beginner. Include TDBFlyTreeViewPro, TFlyTreeViewPro, TPropertiesTreePro (runtime Object Inspector), TRapidTree, TTreeCollection, THTMLText(multiline label with displaying HTML text feature, vertical and horizontal alignment, wordwrap), ISCalendar, ISPlugEditor.
 
Trial (work while IDE is running)
Source: On purchase/registration
Price: $212.95

TDBGridTreeView is a TCustomDBGrid descendants for browsing tree data structures..

If assigned Dataset is not recognized as TTreeDataset then TDBGridTreeView acts exactly as standard TDBGrid.

published properties of TreeViewParams
• ButtonStyle
• LineStyle
• TreeColumnAlign

the assigned Dataset is accessed through PropInfo and must have following published properties to be recognized as TTreeDataset
• TreeParams with two string properties KeyField and ParentField
• Depth
• HasChildren
• IsFirstChild
• IsLastChild
• IsAncestorLastChild
• Expanded

Try included DEMO-exe for more details

Dream InfoTree can be used to display different types of data, including master/detail, self-referenced or any other datasets with custom structure. You can use as many datasets as you need to build tree and the queries can be used to fill levels.
 
Trial (work while IDE is running)
Source: On purchase/registration
Price: $59

There are three controls: TDTADOTree, TDTClientTree, TDTTableTree for TCustomADODataSet, TCustomClientDataSet and TTable accordingly. If your dataset supports filtering and you can create its clone dataset, you can derive your own treeview by overriding CreateCloneDataSet method of the TDTCustomDBTreeView control.
 
Fully functional
Source: Included

Library contains following visible components:

1. OneTable Trees

• TFIBExTreeView - DBTreeView component. Nodes of Tree load from database after expand parents. Supports:
• Simple/CheckBox/RadioGroup mode
• Internal Locate/sort dialogs and internal Popup menu for general edit operations
• Filtering nodes
• Custom sorting nodes in any order
• Easy replacing imageindex and stateindex
• Full Drag&Drop operation on tree/treelist and between trees/treelists
• Using additional custom fields
• Designtime metadata creator
• TFIBExTreeColumnList – DBTreeView component with columns.
• TFIBExTreeList – DBListView component.
• TFIBExTreeComboBox – DBTreeComboBox component.

2. MultyTable Dinamic Trees

• TFIBExDynTreeView - DBTreeView component.
• TFIBExDynTreeColumnList – DBTreeView component with columns.
• TFIBExDynTreeList – DBListView component.
• TFIBExDynTreeComboBox – DBTreeComboBox component.

Library contains following visible components:

1. OneTable Trees

• TIBXExTreeView - DBTreeView component. Nodes of Tree load from database after expand parents. Supports:
• Simple/CheckBox/RadioGroup mode
• Internal Locate/sort dialogs and internal Popup menu for general edit operations
• Filtering nodes
• Custom sorting nodes in any order
• Easy replacing imageindex and stateindex
• Full Drag&Drop operation on tree/treelist and between trees/treelists
• Using additional custom fields
• Designtime metadata creator
• TIBXExTreeColumnList – DBTreeView component with columns.
• TIBXExTreeList – DBListView component.
• TIBXExTreeComboBox – DBTreeComboBox component.

2. MultyTable Dinamic Trees

• TIBXExDynTreeView - DBTreeView component.
• TIBXExDynTreeColumnList – DBTreeView component with columns.
• TIBXExDynTreeList – DBListView component.
• TIBXExDynTreeComboBox – DBTreeComboBox component.

It can display hierarchical data stored in any database, which is TDataset compliant.

KADaoDBTreeView is very fast and does not rely on database specific calls to display the data. Compared with some other DBTreeView systems KADaoDBTreeView is sometimes 1000% faster. This is not the only benefit of KADaoDBTreeView – it can sort data, move nodes up and down on same level or level-up and level-down in the tree. All changes reflect immediately in the relying database.

KADaoDBTreeView always detect changes to the Dataset made outside the TreeView and rebuilds itself when such event occurs. It also offers Cached record data, synchronization with records, displaying orphaned records that does not belong to the tree structure of the Dataset.

KADaoDBTreeView also can display the Root of all records in the database which is very useful in some cases.
 
Partially restricted
Source: On purchase/registration
Price: $29.95

Features:

• Really fast (less than 3 sec. to build a tree with 10,000 DB records on local mysql)
• Souple: No need to rebuilt the tree for every modification (inserts, updates, ...)
• Data's nature independant: Based on TDataset, so can be used with BDE, DBExpress, text Based datasets, specifics datasets, ....
• completely browsable: both ways (Tree -> Dataset, dataset -> Tree)
• DB events support: before / after: insertNode, editNode, deleteNode
• supports for images
• Several modes for insert (Key value determination): AutoIncremental, Automatic(lastID +1), Sql queries (if use of udpateOject) or choosen by users
• Supports Lookups on another table to find out nodes text
• Keys support for inserts, deletes, edits
• Allows active / desactivate mode: browsing, keys support,....