Free, open source software Qliner hotkeys is a keyboard shortcut application similar to previously-mentioned app WinKey.
Hotkeys builds on the concept of Windows shortcut keys but takes this concept to a whole new level. Do you think key combinations are hard to remember? Just hold the Windows key for three seconds and up pops a Onscreen Keyboard with icons on the keys that are configured. This you can you use , not only to remind you of hotkey combinations, but also for Drag and Drop Configuration.
As an added bonus for laptop users whose Windows key is non-existent or inaccesible, hotkeys allows you to map the Windows key to your Caps Lock key.