TunnelVision - See your next Trello tasks every time you open a browser tab
Likewise - Get recommendations you love, from people you know.
Pliim - One click and be ready to go up on stage and present!
Alternative Hunt - Learn about great alternative products as you browse the web
HiddenMe - Hide desktop icons with a single click.
Vanilla - Vanilla is a free Mac app that lets you hide icons from your menu bar.