Do you want to open an application, file or folder quickly? Try to use QOpen (QuickOpen).
With QOpen you can assign shortcut keys to open an application, file or even a folder as you want. Every applications, folders or files can be opened by pressing Win key + Space + [asiggn key]. Example, you assigned "NP" for Notepad, you can open it by pressing Win key + Space + N + P.
Maybe you will tell me that you can assign some hot keys like "Ctrl + Alt + ...". But I don't like it because many applications can use same hot key so it will conflict, especially when I'm using IntelliJ IDEA.
And more, it's very light-weight application (about 60KB). Nice application :-)