GreatDane's Free Stuff!

Versions - Do you have a tough time keeping up with software upgrades and new products? Then sign up with this service---the free version will track up to three products that you'd like to keep tabs on. You can request notification about new products, sales, and special offers by category. Versions keeps listings of over 50,000 products.
PlanetAll - This very useful service lets you receive automatically updated information and reminders about your contacts. This service lets you keep on top of things: birthdays, anniversaries, etc. PlanetAll also allows you to build a private address book that's always up-to-date (and which you can access anywhere).
Remind U-Mail - Sign up for this service and you'll get your own reminder calendar, which you can then update, edit and modify. You can also have E-mail reminders sent to you. Here's a sample calendar.
Remember To... - Nice reminder service. Enter your info and then you'll have E-mail automatically sent to you to remind you when you want it to.
Dave's Auto Maintenance Reminder Service - This reminder service sends you a reminder email when it's time to perform auto maintenance. Enter data about your vehicle and the system calculates a reminder date based on your manufacturer's recommendations.
Allnotes: a useful free site for all your reminder needs. Allnotes provides complete service for remembering those important dates like anniversaries and birthdays. Allnotes will also handle your day to day reminders like meetings and appointments.
RememberIt.com - This is a free E-mail reminder service that can remind you of a variety of preconfigured and customizable events. It's easy to use, secure and reliable.
Remind Me! With this service you may enter up to 50 dates that you would like to be reminded about and specify the messages that you want sent to you. This service will then E-mail you the reminder messages. You can add or delete reminders any time by logging in again with your E-mail address and password.
Online Elephant Reminder Service - Keep forgetting your wedding anniversary, your mother's birthday, your doctor's appointment? Never again! In addition to reminding you about special events, OnlineElephant.com will E-mail you a famous quote or Bible verse everyday.
2Remember.com - A free service that will remind you of any date that is important to you. Your reminder will come to you by E-mail 14 and 7 days before the event. For Webmasters, there is a option on this site to add a free reminder service for your customers on your site.
Bigfoot Remember Service - This major free E-mail service now has a nice reminder service feature. Here, you can specify a date you'd like to keep track of, define how many days in advance you'd like to be reminded of it, and enter a message to yourself regarding the occasion, which is all delivered to you via E-mail.