Interactive Calendar is a completely free, feature-packed and extremely customizable desktop calendar that is a pleasure to use and look at. Unlike the majority of its direct competitors, this calendar software renders the calendar grid right on the wallpaper, considerably increasing the speed of refreshes/updates and seamlessly integrating with your Windows theme. Another advantage of Interactive Calendar is the degree of visual customization it supports. You can control nearly every aspect of the calendar's appearance: cell spacing, font size, position on the screen, color, opacity and so on. Which is more, you can use a dozen skins that come with the program or load your own images to serve as background for the calendar. The program also supports three interface variations, which allows it to blend perfectly with any Windows theme.

The calendar has several views and allows you easily create and manage tasks, specifying their duration, order, start and end days, description and other parameters. Task descriptions support RTF formatting, allowing you to create properly formatted and well-structured Word-like documents, if need be. Interactive Calendar supports task import (from CSV and the program's own format) and export(to CSV, XML and the program's own DB format).