Gminder is a small program that is very useful for any Windows Google Calendar user. If you are using a Google Calendar, this program integrates with it to give you reminders about events on your calendar. You give in your Google username and password and this tool will download the calendar details. Events are color coded by time and you can even customize it to suit your choice. The application resides in system tray and opens up with a pop-up for the day's events when you click it. This small and lightweight program is a great addition to Google Calendar and you can use it to make optimum use of Google Calendar.