One Calendar AlternativesCalendar Apps like One Calendar

One Calendar is described as 'View all your Google, Outlook, iCloud, and Office365 calendars in one place. Manage events, birthdays, and appointments with seamless integration' and is a Calendar app in the office & productivity category. There are more than 50 alternatives to One Calendar for a variety of platforms, including Web-based, Android, iPhone, Windows and Android Tablet apps. The best One Calendar alternative is Google Calendar. It's not free, so if you're looking for a free alternative, you could try Google Calendar or Fossify Calendar. Other great apps like One Calendar are Simple Calendar, Apple Calendar, Right Calendar and OurCal.

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Alternatives list

  1. Google Calendar icon

    Google Calendar

     945 likes

    Manage events seamlessly with syncing across devices, automatic event creation from Gmail, shareable schedules, customizable reminders, and a user-friendly interface. Features include dark mode, integration with Google services, and support for recurring events and global time zones.

    161 Google Calendar alternatives

    Cost / License

    • Free Personal
    • Proprietary

    Application type

    Platforms

    • Online
    • Android
    • iPhone
    • Chrome OS
    • Android Tablet
    • iPad
    • Sunbird
    • Google Chrome
    Google Calendar screenshot 1
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    1
    Comments about Google Calendar as an Alternative to One Calendar
    thniels
    Negative
    0

    Only supports Google calendars, not CalDAV etc.

    One Calendar Icon
    Google Calendar icon

    • Google Calendar is the most popular Web-based, Android, iPhone & iPad alternative to One Calendar.

    • Google Calendar is the most popular free alternative to One Calendar.

    • Google Calendar is Free Personal and ProprietaryOne Calendar is Freemium and Proprietary
  2. Fossify Calendar icon

    Fossify Calendar

     52 likes

    Your privacy-aware, open-source calendar with intuitive design and multi-platform syncing.

    51 Fossify Calendar alternatives

    Cost / License

    Application type

    Platforms

    • Android
    • Android Tablet
    • F-Droid
    Fossify Calendar screenshot 1
    Fossify Calendar screenshot 2
    Fossify Calendar screenshot 3
     

    • Fossify Calendar is the most popular Open Source alternative to One Calendar.

    • Fossify Calendar is Free and Open SourceOne Calendar is Freemium and Proprietary
    • Fossify Calendar is Privacy focused, Customizable and LightweightOne Calendar is not according to our users
  4. Microsoft Outlook icon

    Microsoft Outlook

     397 likes

    Streamline emails, calendars, contacts, and task management with a smart inbox prioritizing critical messages. Includes calendar scheduling, third-party app integration like Facebook, Dropbox, and Trello, and support for Microsoft Exchange, Outlook.com, and Gmail, ensuring efficient task and email handling.

    126 Microsoft Outlook alternatives

    Cost / License

    • Pay once or Subscription
    • Proprietary

    Application types

    Platforms

    • Mac
    • Windows
    • Online
    • Android
    • iPhone
    • Android Tablet
    • iPad
    • Apple Watch
    • Android Wear
    Outlook 365 on Windows
     
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    1
    Comments about Microsoft Outlook as an Alternative to One Calendar
    Guest
    Negative
    0

    No editing of google entries in the outlook app

    Review by a new / low-activity user.
    One Calendar Icon
    Microsoft Outlook icon

    • Microsoft Outlook is the most popular Windows & Mac alternative to One Calendar.

    • Microsoft Outlook is the most popular commercial alternative to One Calendar.

    • Microsoft Outlook is Paid and ProprietaryOne Calendar is Freemium and Proprietary
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    Lifestack icon
    Lifestack

    Connects calendar, tasks, and wearable health data to offer AI insights, time-blocking, optimal scheduling based on sleep and activity trends, energy heatmaps, integration with task apps, reminders, and an all-in-one daily planni...

    https://lifestack.ai
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  6. Simple Calendar icon

    Simple Calendar

     51 likes

    A simple calendar with optional CalDAV synchronization. You can easily create recurring events and setup reminders, it can also display week numbers.

    Cost / License

    • Freemium (Pay once)
    • Proprietary (GPL-3.0)

    Application type

    Alerts

    • Warning

    Platforms

    • Android
    • Android Tablet
    Simple Calendar screenshot 1
     
  7. Apple Calendar icon

    Apple Calendar

     144 likes

    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.

    102 Apple Calendar alternatives

    Cost / License

    • Free
    • Proprietary

    Application type

    Platforms

    • Mac
    • iPhone
    • iPad
    • iCloud
    Apple Calendar screenshot 1
     
  8. Right Calendar icon

    Right Calendar

     9 likes

    Right Calendar app is a versatile scheduling tool that offers unparalleled flexibility to its users. One of its standout features is that it is built on an open-source platform. This not only ensures transparency but also allows for constant updates and bug fixes from a...

    52 Right Calendar alternatives

    Cost / License

    Application type

    Platforms

    • Android
    Right Calendar screenshot 1
    Right Calendar screenshot 2
    Right Calendar screenshot 3
     
  10. OurCal icon

    OurCal

     5 likes

    This app is tailored for families, couples, friends, and groups, providing end-to-end encryption for secure data, seamless calendar creation, syncing, private chats, and widgets for easy access, ensuring you never miss an event.

    62 OurCal alternatives

    Cost / License

    • Freemium (Subscription)
    • Proprietary

    Application type

    Platforms

    • Android
    • iPhone
    OurCal screenshot 1
    OurCal screenshot 2
    OurCal screenshot 3
     
  11. Morgen icon

    Morgen

     29 likes

    Brings together calendars, to-dos, productivity apps, and schedulers in one platform. Integrates with major services like Google Calendar, iCloud, Todoist, and video conferencing tools such as Zoom. Offers native scheduling similar to Calendly, enhancing time management efficiency.

    112 Morgen alternatives

    Cost / License

    • Subscription
    • Proprietary

    Application types

    Platforms

    • Mac
    • Windows
    • Linux
    • Android
    • iPhone
    Morgen screenshot 1
     

    • Morgen is the most popular Linux alternative to One Calendar.

    • Morgen is Paid and ProprietaryOne Calendar is Freemium and Proprietary
    • Morgen is Privacy focusedOne Calendar is not according to our users
  12. Merkuro Calendar icon

    Merkuro Calendar

     11 likes

    Merkuro is a calendar and contact application that allows you to manage your tasks, events and contacts. Merkuro supports both local calendars as well as a multitude of online calendars: Nextcloud, Google® Calendar, Outlook®, Caldav, and many more.

    Cost / License

    • Free
    • Open Source

    Application types

    Platforms

    • Linux
    • Flathub
    • Flatpak
    Merkuro Calendar screenshot 1
     
  13. Lifestack icon

    Lifestack

     2 likes

    Connects calendar, tasks, and wearable health data to offer AI insights, time-blocking, optimal scheduling based on sleep and activity trends, energy heatmaps, integration with task apps, reminders, and an all-in-one daily planning dashboard.

    Cost / License

    • Subscription
    • Proprietary

    Application types

    Platforms

    • Online
    • Android
    • iPhone
    • Google Chrome
    • Software as a Service (SaaS)
    Lifestack screenshot 1
     

    • Lifestack is the most popular SaaS alternative to One Calendar.

    • Lifestack is Paid and ProprietaryOne Calendar is Freemium and Proprietary
  14. Calendar Lock PEA icon

    Calendar Lock PEA

     17 likes

    Calendar encryption: View calendars and stores them encrypted on your device or in the cloud.

    Cost / License

    • Free
    • Open Source

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    week view
     
  15. Outlook Calendar icon

    Outlook Calendar

     18 likes

    Web-based time-management tool featuring appointment scheduling, sharing, reminders, to-do list integration, iCalendar file import, collaborative options, multiple calendar creation, recurring events, and cross-device access for both personal and organizational use.

    62 Outlook Calendar alternatives

    Cost / License

    • Free
    • Proprietary

    Application types

    Platforms

    • Online
    Outlook Calendar screenshot 1
     
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