Bulb

Bulb is a lightweight and beautiful app that takes care about all the tasks you should do later. Just add a new alarm, specify a due date and decide if it should repeat - Bulb will remind you about it. You can also schedule sleep, shutdown, restart and logout.

Features:

• Schedule alerts, sleep, shutdown, restart and logout,
• Clean and crisp user interface,
• Simple - managing your reminders is fast and easy,
• Lightweight and silent - you will not notice it unless you want to,
• Dropbox sync (Dropbox client must be installed),
• Multitouch enabled - take advantage of your trackpad and
  More...
  

Version 1.7.0:

• Fixed bug with task viewing on Snow Leopard
• Other bug fixes
• OS X 10.8 Mountain Lion bug fixes

Requirements for Bulb

• Mac OS X 10.6.6 or later
• 64-bit processor

*Previously available here