Kin Calendar!

Microsoft Outlook, part of the Microsoft Office Suite (not to be confused with Microsoft Outlook Express), is a personal information manager that lets you manage your e-mail, calendar, contacts, and tasks.

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. »

Fantastical is a flexible calendar with natural language event creation, a beautiful calendar and event list, support for CalDAV (including Google Calendar delegates) automatic alarms, and instant searching.

Why?

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

IQTELL is a Productivity app that supports the Getting Things Done methodology (GTD) - Managing your Emails, Calendars, Contacts, Evernote, Tasks, Projects and more in one place.

CalenGoo gives you a fast and easy way to access and change your Google Calendar (or Google Apps Calendar) with your Android device. It can either work with the built-in calendar or it can sync directly with Google.

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. »

Google Calendar Repair, Editing & Maintenance: Delete Duplicates, multiple edit and delete, search/replace, undo failed import and sync and more!

From Google Play:This visually-engaging, powerful piece of app will guide users to live a passionate life, by providing effective time & task management tools and Infotainment.SolCalendar is well known for its beautiful design and intuitive functions, and it has been introduced by major IT medias such as TNW, engadget, and addictivetips as one of the best alternatives for Google Calendar.

WAVE Calendar is a free calendar app with a beautiful UI and a smooth navigation. The app includes free tasks and additional calendars to enrich your calendar. To make your calendar experience even better you can download three widgets, add the local weather, add attachments, and add special tags to appointments. Besides this, the app includes all the standard features you would expect from a calendar app!

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.