• 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...

    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

  • 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...

    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...

    Commercial Mac Windows

  • Airmail icon

    Airmail

    Airmail is a lightweight and lightning fast mail client for Mac. Feature list: Accounts: - Unified Inbox and folders - Multi...

    Commercial Mac iPhone iPad Apple Watch

  • 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...

    Free Mac iPhone iPad iCloud

  • 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...

    Freemium Windows Android iPhone Android Tablet iPad Apple Watch

  • 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...

    Freemium Mac Windows Linux

  • 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...

    Open Source Mac Windows Linux BSD

  • 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...

    Open Source Mac Windows Linux Android iPhone iPad

  • EssentialPIM icon

    EssentialPIM

    EssentialPIM lets you manage appointments, tasks, notes, contacts, password entries and email messages across multiple devices and...

    Freemium Windows Android iPhone

  • Know any more alternatives to Kontact?

    Suggest an application to this list
  • The Bat icon

    The Bat

    The Bat! is a secure email client software, built to protect your correspondence against third-parties.

    Commercial Windows

  • 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...

    Free Web / Cloud

  • FullContact icon

    FullContact

    The FullContact Address Book lets you keep all your contacts in one place, automatically up-to-date. This social contact management...

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

  • Windows Live Mail icon

    Windows Live Mail Discontinued

    Windows Live Mail (formerly named Windows Live Mail Desktop) is a freeware email client from Microsoft. It is the successor to Outlook...

    Free Windows

  • 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...

    Open Source Mac Windows Linux Xfce

  • Sparrow icon

    Sparrow Discontinued

    Sparrow is a minimalist mail application for Mac. It was designed to keep things simple and efficient. No fancy stuff here... just...

    Commercial Mac iPhone

  • Share this list of alternatives?

  • Fantastical icon

    Fantastical

    Fantastical is a flexible calendar with natural language event creation, a beautiful calendar and event list, support for CalDAV...

    Commercial Mac iPhone iPad Apple Watch

  • 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...

    Free Personal Mac Windows Linux

  • UV Outliner icon

    UV Outliner Discontinued

    UV Outliner is a small and powerful single-pane outliner. It is intended for creating, organizing, and collecting information. With...

    Free Windows

  • Polymail icon

    Polymail

    The most powerful platform for email productivity in a beautiful native app — on desktop and mobile.

    Freemium Mac iPhone iPad

  • Trojitá icon

    Trojitá

    Trojitá, is a fast Qt IMAP e-mail client that respects open standards and facilitates modern technologies. Trojitá values...

    Open Source Windows Linux

  • Mail icon

    Mail

    Windows 10 has Mail and Calendar apps already built in. With the Mail application you can now...

    Free Windows

  • Memotoo icon

    Memotoo

    With Memotoo, sync all you want ! Sync and share your personal datas (bookmarks, address book, calendar, files, ...) with...

    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

  • UKs Kalender icon

    UKs Kalender

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

    Free Windows

  • 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...

    Free Web / Cloud

  • sup icon

    sup

    Sup is a console-based email client for people with a lot of email. It supports tagging, very fast full-text search, automatic...

    Open Source 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....

    Commercial Android iPhone Android Tablet iPad Android Wear

  • 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...

    Free Web / Cloud

  • Alpine icon

    Alpine Discontinued

    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...

    Open Source Mac Windows Linux

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