Remind!

Keep track of your busy schedule and share it with others using Calendar. Create separate calendars — one for home, another for school, a third for work, and so on. See all your calendars in a single window or choose to see only the calendars you want. Calendar lets you create invitations using information from Contacts, update your guest list, keep track of responses, and receive the latest status information. When you or another Mac user receives a Calendar invitation via Mail, it’s automatically added. Calendar also works with iCloud, Yahoo!, and Google. And when you use iCloud, every Calendar edit you make on your Mac automatically appears on your iPad, iPhone, and iPod touch. So no dinner dates are missed, no meeting goes unattended, and no anniversary is forgotten. »

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 on all major operating systems: Windows, Linux and Mac OS X. 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 including the Google Calendar and edit your Outlook appointments directly in Rainlendar*. »

Kolab is entirely Free and Open Source Software (a.k.a. FOSS), and uses Open Standards. We’ll get to why this is important to us, and hope that it is important to you thereafter.

An offline calendar without any other calendar integration. You can easily create recurring events and setup reminders, it can also display week numbers.

BEAUTIFULLY DESIGNEDDigiCal’s diary planner and organizer provides a clear and beautiful overview for your events and appointments.• Conveniently switch between 7 calendar views (day, week, week agenda, month calendar, text month, year and list view in portrait and landscape mode).• The slick dark theme allows for better visibility in low-light settings and night mode.• Event keyword image matching available in all 27 languages!• 6 highly customizable widgets with different theme styles and views: (FREE: list, day, day list, day grid widgets; PREMIUM: 2 extra widgets –text month and month calendar widget)• Intuitive navigation between days, weeks and months with zoomable day and week view. »

MemoCalendar.net is a light-weight and easy-to-use online calendar like a usual memo calendar on the wall. Behind every day a small note can be deposited. MemoCalendar.net is free and without registration (login) usable.

Caliander is the calendar that lets you create events faster and with less effort while keeping you on top of things with its smart and unique presentation. It uses the same calendar database as iCal, so it syncs with all your devices as usual, and all your events are there—no migration needed!

PreMinder is an easy to use calendar with monthly, two-monthly, week or multi-week views. A handy scrollbar that lets you move through the months of the year. The day view editing window features an at-a-glance schedule. Simply click on a date and start typing to add information; times are automatically recognized. Store text in different fonts, colors and sizes and even small images in your reminders. Import iCal files and birthdays from the Address Book. Make banner events, repeating events and add alarms which support Growl notification. »

MineTime is a free, modern desktop calendar app. Connect all your calendar services and let MineTime's Scheduling Intelligence help you optimize your time.MineTime works natively with Google Calendar, Outlook.com, Microsoft Exchange and Office 365: this means you can organize all your calendars directly in MineTime.

wtplan (web terminal planner ) helps you manage a calendar. The calendar can be managed from a command line interface and/or a web interface. The calendar data is stored in a simple text file. wtplan integrates with git to make backup and synchronization between multiple computers convenient.