Picture in picture for your Mac. Just drag a video, picture website or file to your menu bar.
Grayscale Mode is a menu bar app that gives you more control over Grayscale Mode.
HiddenMe hides all the clutter on your mac desktop with a single click.
Hummingbird is a menu bar app that allows easy moving and resizing of windows by holding modifier keys and dragging your mouse to move and resize windows.