1calendar Alternatives

1calendar is described as 'With 1calendar you can keep track of all your activities, events, and to-dos. The calendar also imports timetables from high schools and universities, and events from Facebook. The calendar is available on the web and mobile' and is a Calendar app in the office & productivity category. There are more than 10 alternatives to 1calendar for a variety of platforms, including Web-based, Android, iPhone, Mac and Windows apps. The best 1calendar alternative is Google Calendar, which is free. Other great apps like 1calendar are Microsoft Office Outlook, Apple Calendar, BusyCal and iRedMail.

1calendar alternatives are mainly Calendar Apps but may also be Todo List Managers or Email Clients. Filter by these if you want a narrower list of alternatives or looking for a specific functionality of 1calendar.

1calendar alternatives page was last updated

1calendar

Free • Proprietary
Calendar App

With 1calendar you can keep track of all your activities, events, and to-dos. The calendar also imports timetables from...

More about 1calendar

Google Calendar
Is this is a good alternative?
Yes
No
Free • Proprietary
Calendar App
Online
Android
iPhone
Chrome OS
Android Tablet
iPad
Sunbird
Google Chrome
137 Google Calendar alternatives
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.
- - Google Calendar is the most popular Web-based, Android, iPhone & iPad alternative to 1calendar.
- - Google Calendar is the most popular free alternative to 1calendar.
Suggest and vote on features
Google Calendar Features
1. Cloud SyncSync your data (notes, documents, bookmarks, etc.) across your different devices and to the cloud.
2. IFTTT IntegrationYou can connect different services to automatically trigger actions within Google Calendar using IFTTT.
3. Calendar IntegrationGoogle Calendar lets you sync your tasks and events with your calendar application.
Reminder for deadlines
Material design
Data export/import
Shared Calendar
Microsoft Office Outlook
Is this is a good alternative?
Yes
No
Paid • Proprietary
Email Client
Calendar App
Mac
Windows
Online
Android
iPhone
Android Tablet
Windows Phone
iPad
Apple Watch
Android Wear
141 Microsoft Office Outlook alternatives
Microsoft Outlook, part of the Microsoft 365 (Office) (not to be confused with Microsoft Outlook Express), is a personal information manager that lets you manage your e-mail, calendar, contacts, and tasks.
- - Microsoft Office Outlook is the most popular Windows & Mac alternative to 1calendar.
- - Microsoft Office Outlook is the most popular commercial alternative to 1calendar.
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Microsoft Office Outlook Features
1. Email OrganizerMicrosoft Office Outlook allows you to take control of your inbox by filtering and control tools.
2. Calendar IntegrationMicrosoft Office Outlook lets you sync your tasks and events with your calendar application.
3. Support for @mentionsMicrosoft Office Outlook supports the use of mentions through @ to a particular user, who will be notified personally.
4. Calendar ViewMicrosoft Office Outlook has a built-in calendar view to have a clear overview of your content over time.
5. Support for AliasesMicrosoft Office Outlook supports aliases, so you can receive email without exposing your main email address
6. Unified inboxView e-mails (or similar) from all accounts in one unified view with Microsoft Office Outlook.
7. Multiple Account supportMicrosoft Office Outlook support multiple accounts without the need to logout and login
8. Works OfflineMicrosoft Office Outlook can be used without the need to connect to the internet.
9. Cloud SyncSync your data (notes, documents, bookmarks, etc.) across your different devices and to the cloud.
Exchange
Native application
Contacts
Built-in Calendar
Onenote Desktop Integration
Address book integration
Dropbox integration
Gmail integration
Office 365 integration
Onedrive integration
Apple Calendar
Is this is a good alternative?
Yes
No
Free • Proprietary
Calendar App
Mac
iPhone
iPad
iCloud
76 Apple Calendar alternatives
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.
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Apple Calendar Features
Web-Based
Sync with iCloud
Week Planner
Scheduling
BusyCal
Is this is a good alternative?
Yes
No
Paid • Proprietary
Calendar App
Todo List Manager
Task Management Tool
Mac
45 BusyCal alternatives
BusyCal is the most powerful, flexible, heavily customizable, reliable calendar app for macOS. It's packed with time-saving features and compatible with all leading cloud services including Reminders, iCloud, Google, Exchange, Office 365, Yahoo, Fastmail, Fruux, Kerio, Zoom...
Suggest and vote on features
BusyCal Features
1. Cloud SyncSync your data (notes, documents, bookmarks, etc.) across your different devices and to the cloud.
2. Dark ModeBusyCal supports dark mode for comfortable usage in low light conditions.
3. Calendar IntegrationBusyCal lets you sync your tasks and events with your calendar application.
4. Calendar ViewBusyCal has a built-in calendar view to have a clear overview of your content over time.
5. Recurring TasksBusyCal supports scheduling a task to recur at any frequency, such as daily or weekly.
Calendar Sync
Group calendar filters
Snooze Alarm
iRedMail
Is this is a good alternative?
Yes
No
Freemium • Open Source
Mail Server
Linux
BSD
Self-Hosted
69 iRedMail alternatives
A fully fledged, free email server solution, an open source project (GPL v2).

Use official binary packages from Linux/BSD distributions, with both i386 and x86_64 support.

Easy, fast deployment in LESS THAN 1 MINUTE. View YouTube Video to check how easy it is.

Works on both no.
- - iRedMail is the most popular Linux & Self-Hosted alternative to 1calendar.
- - iRedMail is the most popular Open Source alternative to 1calendar.
iRedMail has no features, suggest some!
aCalendar
Is this is a good alternative?
Yes
No
Freemium • Proprietary
Calendar App
Android
38 aCalendar alternatives
Android calendar-app showing the weeks of the year (week numbers), 21 languages, syncable with Google Calendar:
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aCalendar Features
1. Sync with Google CalendaraCalendar can be synchronized with Google Calendar
2. Recurring TasksaCalendar supports scheduling a task to recur at any frequency, such as daily or weekly.
Multiple languages
Calendar Sync
30 Boxes
Is this is a good alternative?
Yes
No
Free • Proprietary
Calendar App
Online
37 30 Boxes alternatives
30 Boxes is an online calendering tool.
30 Boxes has no features, suggest some!
Google Calendar Checker
Is this is a good alternative?
Yes
No
Free • Proprietary
Calendar App
Mac
Windows
Linux
37 Google Calendar Checker alternatives
Quickly see the time until your next meeting from any of your calendars. Click on the button to be taken to your calendar.
Google Calendar Checker has no features, suggest some!
Add a screenshot
Yahoo! Calendar
Is this is a good alternative?
Yes
No
Free • Proprietary
Calendar App
Todo List Manager
Online
39 Yahoo! Calendar alternatives
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 share your calendars and events. You can control how.
Suggest and vote on features
Yahoo! Calendar Features
CalDAV Support
Add a screenshot
Easy Calendar
Is this is a good alternative?
Yes
No
Paid • Proprietary
Calendar App
iPhone
26 Easy Calendar alternatives
Experience the ease of use of a weekly calendar in the palm of your hand! Easy Calendar is the new easy way to plan your day. Designed around frequent tasks, Easy Calendar allows anyone to create new events with just a few taps!
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Easy Calendar Features
Planner
Do It Tomorrow
Is this is a good alternative?
Yes
No
Freemium • Proprietary
Todo List Manager
Task Management Tool
Calendar App
Windows
Android
124 Do It Tomorrow alternatives
'Do It Tomorrow' is a Windows desktop application which helps you to track, organize, reuse, export, print, and summarize your tasks.
Suggest and vote on features
Do It Tomorrow Features
Google Drive integration
Calendar Sync
Discontinued
The website and the app are not available anymore