Features of eXTree include:

Compatible with the Data Execution Prevention (DEP)
Print and Print Preview support.
WYSWYG Template/Layout Editor support.
Ability to generate the control's template at runtime.
ADO and DAO support
Skinnable Interface support ability to apply a skin to any background part
Customizable Windows XP Theme support
Multiple Columns
Single or Multiple Lines/Levels Header support.
Sorting by Single or Multiple Column support.
ActiveX hosting you can place any ActiveX component in any item of the tree
Events from contained components are fired through to your program using the exact same model used in VB
'starts with' and 'contains' incremental searching support
FilterBar Support.
Ability to filter items using patterns that include wild card characters like *, ? or #, items between two dates, numbers, with an easy-to-use interface.
Ability to filter items using AND, OR, or NOT operators between columns.
Conditional Format support.
Ability to format the cells based on several predefined functions and expressions such as currency, shortdate, longdate ...
Computed Fields supports numbers, strings and dates expressions.
OLE drag and drop support for items, drag and drop support for columns
"Split Cells" support.
"Merge Cells" support.
Locked/Fixed rows/items support.
Divider items support.
Not selectable items support.
Locked/Fixed columns support .
Multi-lines items support
Partial Check Support. Built-in checkbox reflection to reflect that state of children, parents.
Any cell supports Built-in HTML format.
Ability to insert hyperlinks anywhere in the cell's caption.
Unlimited color options for cells, items, columns
Different font for any cell or item
Cells can be formatted individually, or via columns or rows
Radio buttons, images, check boxes
Ability to assign multiple icons to a cell
Ability to load icons or pictures from BASE64 encoded strings
Multi-lines tooltip support, XP shadow effect
Mouse wheel support
ANSI and UNICODE versions available.
and more