Suggest me some cool app for todo list or calender

[coldhart]

I want app which i can use for store todo list something like calender entry first i liked google calender whose ui is pretty neat but it need chrome & gmail access so if there is any cool offline calender app for windows then plz suggest me

OS
windows 7 ultimate sp1 x64

 

[lxskllr]

Sunbird. If you use a mail client, Thunderbird with the Lightning extension.

 

[ringtail]

coldhart;

Although I haven't in years, once upon a time I found Rainlendar useful for todo list & calendar reminders.
http://www.rainlendar.net/cms/index.php

You might be better off with Lightning add on if you use Mozilla Thunderbird email client, or obviously MS Outlook or Gargle Calendar.

 

[Nothinman]

http://support.google.com/calendar/bin/answer.py?hl=en&answer=1340696

Did that not work for you?

 

[coldhart]

there is no problem with google calender but i heard it need gmail & google chrome which i don't wanna install bcoz im firefox user & i want offline calender

@ringtail
thanks for rainlender suggestion. i tried it very good app but skins are not cool but it serves the purpose