The Bedtime Calculator
http://sleepyti.me

Flux - Changes Your Computer Screen with the Time of Day / Night for Less Strain on Your Eyes
http://justgetflux.com

Want to learn all sorts of interesting things ? Its a free daily newsletter that will help you learn something new every day.
http://nowiknow.com

EyeBleach - See Something Terrible on The Internet? Let a Sexy Man or Woman Wash Your Eyes
http://eyebleach.com