Xceed SmartUI 

Xceed SmartUI provides VB6 developers with a framework of visual controls for building rich user interfaces. Includes Menus, ToolBars, TreeViews, OutlookBars, StatusBars, PropertyLists and more all based on an ultra-flexible, reusable core control.
toolbar tool bar menubar menu bar treeview statusbar explorer bar listbox optionlist

VLButtonBar 

Add outlook sidebar style navigation in your applications with VLButtonBar control. Use this control as vertical menu, VB styled toolbox. Supports unicode for button and group captions. Offers great looking buttons with gradient filled background.
unicode drag drop outlook menu button bar button vertical menu toolbar tool palette ocx activex visual b