Free Organisers/Calendars

Rainlendar is a feature rich calendar application that is easy to use and doesn't take much space on your desktop. The application is platform independent so you can run it both on Windows and on Linux. The appearance can be customized with skins and you can even mix different skins together.
It is possible to use Rainlendar with other calendar applications too. Rainlendar uses the standard iCalendar format to store its events and tasks so you can easily transfer them between applications. You can also subscribe to online calendars and see your Outlook appointments directly in Rainlendar*.
Rainlendar is an unicode application and support localization so you can use it on your own language.
All the coming events are shown in a separate list where you can see the week's events at one glance. You can decide how many days in advance you want to see in the list. Different events can have a different appearance in the list so you can easily spot the important events from the others. The icons in the calendar are also available in the event list and other windows to make it easier to separate the events.
You can also have a separate list for your long term tasks. The task list can be arranged several ways so that you can keep it better organized. You can also set a due date for the tasks to make sure you'll remember to do them on time.
You'll also get an alarm when an event or task is due so that you don't miss it. The alarm can be defined to be set off any duration before the actual event so you have time to prepare for it.

UK´s Kalender is a MS Windows program intended to remind you of upcoming events and todos. There are several views for your dates that are organized similar to a calendar sheet. Dates and appointments can be entered into the calendar via an input form. You can enter a forewarn time, so as long as "UK´s Kalender" is running in the background you´ll be reminded of your dates as soon as the forewarn time is reached.
Independent from the calendar function there is also a todo list where you can enter tasks with a deadline and a forewarn time. If the forewarn time is reached, "UK´s Kalender" will inform you of the due tasks with symbols and colors.
Features:
* Automatic saving
* Search and filter functions
* Export to HTML- and CSV-format
* Unlimited Undo and Redo
* Minimize to the system tray
* Network support
* Repeating events
* Forewarn time and snooze function
* Multi day events
* Event categories and templates
* Acoustic reminders
* Event driven program execution and document opening
* Marking and hiding events
* Four event views
* Tooltips for events and todos
* Highly configurable display for events and todos
* Holidays

Chaos Manager.
As a computer is supposed to be a helpful tool I always wanted to organize some of my mess on the computer. I couldn´t really find an organizer that I liked, the ones I tried was either too confusing with too many buttons/options or had an annoying layout, etc. So I decided to make my own little simple and compact organizer which features an appointment/to-do manager (appointments will pop-up), a calendar, contacts (phone/address-book), a notebook which supports multiple topics, sync via internet, email forwarding of appointments, print/import/export and much more. All is password protected and encrypted (optional). You can also customize your own skin and background for the application so it won´t be too dull to look at (ships with a number of skins)