Alternatives to Kontact - KOrganizer for all platforms with any license

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  • Google Calendar icon

    Google Calendar

    With Google Calendar, its easy to keep track of all your lifes important events in one place. You can add events and send invitations effortlessly, share your schedule with friends and family, and search for events you might enjoy.

    Free Web / Cloud Android iPhone Chrome OS Android Tablet iPad Sunbird Chrome

  • Lightning icon

    Lightning

    Lightning brings the Sunbird calendar to the popular email client, Mozilla Thunderbird and the SeaMonkey internet application suite. Since its an extension, Lightning is tightly integrated with Thunderbird or SeaMonkey...

    Open Source Mac Windows Linux Thunderbird SeaMonkey

  • Evolution icon

    Evolution

    Evolution is the official personal information manager and workgroup information management tool for GNOME. It combines e-mail, calendar, address book, and task list management functions. It has been an official part of GNOME since...

    Open Source Linux BSD GNOME

  • Org-mode icon

    Org-mode

    Org-mode is for keeping notes, maintaining ToDo lists, doing project planning, and authoring with a fast and effective plain-text system. Available also as MobileOrg on iPhone (...

    Open Source Mac Windows Linux Android iPhone iPad

  • Apple Calendar icon

    Apple Calendar

    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...

    Free Mac iPhone iPad iCloud

  • Rainlendar icon

    Rainlendar

    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...

    Freemium Mac Windows Linux

  • VueMinder Calendar icon

    VueMinder Calendar

    Take control of your schedule and get reminded wherever and however you want. Instantly access your appointments, tasks, and notes with a simple glance at a transparent calendar that sits right on your Windows desktop. Share calendars...

    Freemium Windows

  • Kontact icon

    Kontact

    Kontact is the integrated Personal Information Manager of KDE. Kontact suite unites mature and proven KDE PIM applications under one roof. Thanks to the powerful KPart technology, existing applications are seamlessly integrated...

    Open Source Windows Linux

  • CalenGoo icon

    CalenGoo

    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. Feature...

    Commercial Android iPhone Android Tablet iPad Android Wear

  • Simple Calendar icon

    Simple Calendar

    A simple calendar with events (optional recurring and reminders), week numbers and a customizable widget. It provides a yearly, monthly, daily view. It's fully opensource without ads, provides a dark theme too.

    Open Source Android Android Tablet

  • ABC Birthday Reminder icon

    ABC Birthday Reminder

    Missing a dental appointment is an unpleasant thing, missing a scheduled call to your client overseas puts you into an even more uneasy situation, but missing your best friend's birthday is embarrassing beyond any comparison. If...

    Commercial Windows

  • qOrganizer icon

    qOrganizer

    qOrganizer is a general organizer that includes a calendar with schedule,reminders,journal/notes for every day, to-do list. But provides features useful for students such as:timetable and a booklet for marks and absences.It's...

    Open Source Windows Linux BSD

    • Discontinued The project is no longer developed. Last version, 3.1.5, released in August 2010, can be still downloaded from SourceForge.
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  • DigiCal icon

    DigiCal

    BEAUTIFULLY DESIGNED DigiCal’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...

    Free Android Android Tablet

  • Yahoo! Calendar icon

    Yahoo! Calendar

    You can view an entire month or focus on a specific date and time. You can also assign colors for different calendars and to-do lists, and drag-and-drop events between dates or years. Yahoo! Calendar gives you more control to...

    Free Web / Cloud

  • OrgCalendar icon

    OrgCalendar

    A fully-functional scheduling WEB-application. The easy way for any organization to have a Internet-calendar within minutes! You simply place the OrgCalendar onto a your web site - and that's it. Calendar management is implemented...

    Commercial Web / Cloud

  • Do It Tomorrow icon

    Do It Tomorrow

    'Do It Tomorrow' is a Windows desktop application which helps you to track, organize, reuse, export, print, and summarize your tasks. Do It Tomorrow for Android is a part of a larger project, initially started as a Windows...

    Freemium Windows Android

  • CCalendar icon

    CCalendar

    CCalendar, formerly Moo Calendar, is a free Windows calendar software supports Google Calendar and Yahoo! calendar. It is featured with multiple calendars support, easy agenda generating and printing, handy TO-DO list and integrated...

    Free Personal Windows

    • Discontinued site is down
  • KeepTime icon

    KeepTime

    A free, smart calendar with wait time reports. Wait less, do more. KeepTime is your personal, smart calendar that helps you outsmart waiting lines, predict traffic and adapt your schedule to always be on time.

    Free Web / Cloud Android

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  • Visual Calendar for Tablets icon

    Visual Calendar for Tablets

    Visual Calendar will change the way you plan your life. Visually link the things you plan to do, creating logical chains. Think Mind Map for your project turned into actual tasks and dates, or events and appointments from your...

    Commercial Android Android Tablet

  • Zoho Calendar icon

    Zoho Calendar

    Zoho Calendar is a free online calendar application that helps you to track your appointments and meeting schedule, send invitation and track RSVP's, share and publicize your calendars. You can aslo access your Zoho Calendar from...

    Free Web / Cloud

  • MemoCalendar.net icon

    MemoCalendar.net

    Light-weight and easy-to-use online calendar like a usual memo calendar on the wall.

    Free Web / Cloud

  • RMP3 icon

    RMP3

    Remind-Me-Please is a freeware reminder program which will give you advance warning of upcoming events, appointments, TV programs, movies, birthdays and so on. Enter one-off or repeating events: daily, weekly, monthly, yearly and...

    Free Mac Windows Linux Mono

    • Discontinued The program is no longer updated. Last version, 3.0.6.0, released in March 2013, can be still downloaded from the official website.

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