Google Calendar is the online calendar of the search giant that is linked to your Gmail account. There are also Google Calendar apps for Android and iOS. Google Calendar offers the possibility to synchronize all your appointments with different devices - and also with third-party applications such as Microsoft Outlook and Thunderbird. Google Calendar also has birthday and holiday calendars and a to-do list.
You can free download Google Agenda 32, 64 bit and safe install the latest trial or new full version for Windows 10 from the official site.