4 4.0.0
mega menu panel navigation hover effect
3 3.3.0
Nav-bar Dropdown Multi-Level Open
3 3.0.0
multi level nested accordion
Mani Multi Responsive dropdown
Dropdown Sub Menu
Large Dropdown Menu
Mega DropDown Menu
Auto hide menu to dropdown submenu
3 4.0.0
Backdrop to highlight dropdown menu items
Multi Tab Search
BS3 - Block Button Groups with hover fade effect| Split-dropdown-Block, Button Block Group, and Dropdown-Block Group
dropdown