I made a raidplanner website for my guild and opened it to everyone at http://www.allgenda.com
It is a good web alternative to the IG raid calendar.
Here are some of its qualities :
- There is nothing to install
- Your guild can have several calendars for different purposes (even other games).
- Recurring events : you can plan your events for the next six months or more in a few clicks.
- You can customize it : the background of your choice and several skins. Browse the skins by scrolling the thumb images in the upper right corner.
- Beautiful icons for your events. The icon for the new raid will be added next week.
- Email notifications to members. You can announce the opening of new events or remind members to give their status.
- It is free
There is also a demo /tutorial video at https://www.youtube.com/watch?v=HYgqkrFhQIY
The next feature will be a view of the roster and a basic dkp management system.
Feel free to ask any question.