TaskbarX - TaskbarX gives you control over the position of your taskbar icons.
7+ Taskbar Tweaker - 7+ Taskbar Tweaker allows you to configure various aspects of the Windows taskbar.
StartIsBack - StartIsBack returns Windows 10 and Windows 8 a real fully featured start menu and start button, behaving exactly like the ones in Windows 7. It's totally awesome and easy solution for your new Windows woes.
Open Shell - Open Shell is a fork of the Classic Shell project for Windows that getting back the classic start...
Stacky - Simple app enhancing windows task bar functionality with stacks of shortcuts.
RocketDock - RocketDock is a Mac OS X dock clone.