IntegralUI Container includes Expander, SplitContainter, TabControl and TabDockContainer.
These controls provde the following feature set :

Expander

• Use of command buttons in control header for specific tasks
• General color and format styles for control appearance
• Color styles for every state (disabled, hover, normal and selected) of control header
• Color styles for every state (disabled, hover and normal)  of command buttons
• Customizable border with three shapes: squared, rounded and chamfered
• Fading effect with five speed levels
• Watermarks
• Theme support
• Visual Styles

SplitContainer

• Three ways to change the appearance of tab strip: using tabs, collapsing buttons or standard splitter
• Choose among 7 predefined shapes of tabs
• Use of command buttons in control tab strip for specific tasks
• Option to set the minimal size of panels
• Horizontal and vertical orientation of splitter and panels
• General color and format styles for control appearance
• Color style for customizing the appearance of control tab strip
• Color styles for every state (hover, normal and selected) of panels
• Color styles for every state (disabled, hover, normal and selected)  of command buttons
• Customizable border with three shapes: squared, rounded and chamfered
• Fading effect with five speed levels
• Watermarks
• Theme support
• Visual Styles

TabControl

• Unique ability to make combination of toolbar and tabs
• Use standard left-right navigation or select the specified tab from a list
• Tabs can be displayed in three modes: AutoSized, Compressed and Justified
• Tabs can contain command buttons for specific tasks
• Choose among 7 predefined shapes of tabs
• Option to change the radius of tab corner
• Use of animated gifs in each tab
• Horizontal and vertical orientation of tab content
• Tabs can be placed on each side: left, top, right and bottom
• Add buttons, labels and separators to the toolbar in control tab strip
• Toolbar can contain items on left and right side of the tab strip
• Choose how tabs are closed: dispose or hide them
• Option to set the maximum width for longer text
• Rich styling features
• High customization of every control part
• Customizable tooltips
• Customizable border with three shapes: squared, rounded and chamfered
• Fading effect with five speed levels
• Watermarks
• Theme support
• Visual Styles

TabDockContainer

• Tabs can be placed on left and right side of the tab strip
• Each page acts as a docking container
• Each tab can open docking container in horizontal or veritical orientation
• Tabs can be docked on each side: left, top, right and bottom
• Horizontal and vertical orientation of tab content
• Fading effect with five speed levels
• Rich styling features
• High customization of every control part
• Many options to change appearance of tabs
• Watermarks
• Theme support
• Visual Styles