Alternatives to Kontact for all platforms with any license

  • 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

  • Apple Mail icon

    Apple Mail

    There’s big news attached. The best way to manage email on a Mac gets even better with OS X Yosemite.

    Free Mac iPhone iPad

    No features added Add a feature
  • eM Client icon

    eM Client

    eM Client is a full featured e-mail client with a modern and easy to use interface. eM Client also offers calendar, tasks, contacts and chat.

    Free Personal Windows

  • Postbox icon

    Postbox

    Postbox is an email application that helps you organize your work life and get stuff done. It has all the elegance and simplicity of Apple Mail, but with more power and flexibility to manage even the most demanding workloads. ...

    Commercial Mac Windows

  • 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

    No features added Add a feature
  • 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

    No features added Add a feature
  • EssentialPIM icon

    EssentialPIM

    EssentialPIM lets you manage appointments, tasks, notes, contacts, password entries and email messages across multiple devices and cloud applications. PIM stands for Personal Information Manager, and it allows you to keep all you...

    Freemium Windows Android iPhone

    No features added Add a feature
  • MyLifeOrganized icon

    MyLifeOrganized

    MyLifeOrganized (MLO) is a personal task outliner and to-do list manager which will help you to organize your goals, projects and tasks into a tree. The To-Do list with actions that require immediate attention will be generated. ...

    Freemium Windows Android iPhone Android Tablet iPad Apple Watch

  • Sylpheed icon

    Sylpheed

    Sylpheed is a simple, lightweight but featureful, and easy-to-use e-mail client (mailer, MUA). Sylpheed runs on many systems such as Windows, Linux, BSD, Mac OS X and other Unix-like systems. Sylpheed uses GTK+ GUI toolkit. The...

    Open Source Mac Windows Linux BSD PortableApps.com

    No features added Add a feature
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  • Google Contacts icon

    Google Contacts

    Google Contacts is Google's contact management tool that is available in its free email service Gmail, as a standalone service, and as a part of Google's business-oriented suite of web apps Google Apps.

    Free Web / Cloud Android Android Tablet

    No features added Add a feature
  • Mutt icon

    Mutt

    Mutt is a small but very powerful text-based mail client for Unix operating systems. Some of its features are: color support, message threading, MIME support (including RFC2047 support for encoded headers), PGP/MIME (RFC2015), various...

    Open Source Mac Windows Linux Xfce

  • FullContact icon

    FullContact

    The FullContact Address Book lets you keep all your contacts in one place, automatically up-to-date. This social contact management software automatically cleans your contacts, enriches them with social profile data, and continually...

    Freemium Web / Cloud Android iPhone Android Tablet iPad Chrome ... Gmail

    No features added Add a feature
  • Fantastical icon

    Fantastical

    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. The easiest way to...

    Commercial Mac iPhone iPad Apple Watch

  • UV Outliner icon

    UV Outliner

    UV Outliner is a small and powerful single-pane outliner. It is intended for creating, organizing, and collecting information. With UV Outliner you can create plans, schedules, and to-do lists, collect and organize ideas...

    Free Windows

    • Discontinued The program is no longer updated. Last version, 2.4.4, released in October 2012, can be still downloaded from the official website.
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  • Zimbra Desktop icon

    Zimbra Desktop

    The free Zimbra Desktop client allows you to meld the online and offline worlds – storing and synching your email, calendar, contacts, files and documents in the cloud, yet having them locally accessible when on the road. Zimbra...

    Free Personal Mac Windows Linux

    No features added Add a feature
  • Trojitá icon

    Trojitá

    Trojitá, is a fast Qt IMAP e-mail client that respects open standards and facilitates modern technologies. Trojitá values vendor-neutrality that IMAP provides and is committed to be as interoperable as possible.

    Open Source Windows Linux

  • Mail icon

    Mail

    Windows 10 has Mail and Calendar apps already built in. With the Mail application you can now easily see all message from your favorite people, more clearly organize social updates and...

    Free Windows

  • Memotoo icon

    Memotoo

    With Memotoo, sync all you want ! Sync and share your personal datas (bookmarks, address book, calendar, files, ...) with Memotoo.com to find them from any computer connected to Internet. - Dont lose your data: if you lose or...

    Commercial Mac Windows Linux Web / Cloud Windows Mobile Android ... iPhone Blackberry Android Tablet Windows Phone iPad Blackberry 10 PlayBook

  • Contacts icon

    Contacts

    Contacts, called Address Book before OS X Mountain Lion, is a computerized address book included with Apple Inc.'s macOS.

    Commercial Mac Web / Cloud iPhone iPad

  • AOL Mail icon

    AOL Mail

    FREE e-mail account with IMAP, spam and virus protection with UNLIMITED storage (GMail max. 7.3 GB). Because of this AOL WebMail is ideal as E-mail archive or E-Mail-Backup utility for other Mail accounts. Move arriving E-Mails with...

    Free Web / Cloud

  • UKs Kalender icon

    UKs Kalender

    This program helps you organizing your dates and tasks and reminds you of upcoming events.

    Free Windows

    No features added Add a feature
  • 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

    No features added Add a feature
  • MailMate icon

    MailMate

    MailMate is an IMAP email client for Mac OS X featuring extensive keyboard control, Markdown supported email composition.

    Commercial Mac

  • Week Plan icon

    Week Plan

    Check out this FREE online fluid weekly planner. Stop trying to be productive, be effective!

    Freemium Windows Web / Cloud Android iPhone Android Tablet iPad

  • Email.biz icon

    Email.biz

    Indian Webmail service allowing people to sign up for an @email.biz mail account. Cloud based Login and Multiple Login System give you safe and secure access to your POP / IMAP email accounts. Now access your email with any Web...

    Free Web / Cloud

    No features added Add a feature
  • Alpine icon

    Alpine

    Alpine is a fast, easy to use email client that is suitable for both the inexperienced email user as well as for the most demanding of power users. Alpine is based on the Pine® Message System (http://www.washington.edu/pine/)...

    Open Source Mac Windows Linux

    • Discontinued not updated since 2008......see http://www.washington.edu/alpine/changes.html
  • Mulberry icon

    Mulberry

    Mulberry is a powerful, easy to use electronic mail (email) and calendar program that allows you to send, access, and manage email and calendars. Mulberry also helps you manage other related information, such as contact information. ...

    Open Source Mac Windows Linux

    • Discontinued The project is no longer developed. Last version, 4.0.8, released in February 2007, can be still downloaded from the official website.
  • Simple Mail icon

    Simple Mail

    Simple Mail is a mail client for Firefox. It allows you to get notified, read and write messages for multiple email accounts inside Firefox. Usage: Configure one or more accounts in Preferences, set account refresh time and get...

    Free Mac Windows Linux Firefox

    No features added Add a feature

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