Best KOrganizer Alternatives in 2026
15 calendar apps our editors would look at instead of KOrganizer, in our ranking order.
KOrganizer: A capable Linux group calendar for users who value open standards and source freedom. Where it falls short: officially available only as a linux desktop application.
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Best forMost individuals and Google Workspace teams
A versatile calendar for personal schedules and Google Workspace collaboration.
- Scheduling links
- Time blocking
- Video meeting support
Free plan · paid from $7/user/mo (annual) · 14-day trial Our Google Calendar verdict → Try Google Calendar10.0/10★★★★★Try Google Calendar -
Best forMicrosoft-centered individuals and organizations
A flexible calendar choice for people and teams already working in Microsoft’s ecosystem.
- Video meeting support
- Shared calendars
Free plan · paid from $9.99/user/mo · 30-day trial Our Microsoft Outlook Calendar verdict → Visit site8.0/10★★★★☆Visit site -
Zoho Calendar not yet scored
Best forBudget-conscious teams needing rich scheduling
A low-cost calendar with booking, sync, room reservations, and broad integrations.
- Scheduling links
- Time blocking
- Video meeting support
—not yet scoredVisit Zoho Calendar -
Best forNotion users wanting calendar-database integration
A free calendar with two-way connections and unusually close Notion integration.
- Scheduling links
- Time blocking
- Video meeting support
9.0/10★★★★☆Try Notion Calendar -
Best forSelf-hosting teams needing collaborative scheduling
A collaborative calendar for teams that want self-hosting, sharing, and booking links.
- Scheduling links
- Video meeting support
- Shared calendars
8.0/10★★★★☆Visit Nextcloud -
Best forPrivacy-focused users wanting free scheduling
A privacy-focused calendar with free scheduling tools and limited two-way sync.
- Scheduling links
- Video meeting support
- Shared calendars
7.0/10★★★★☆Try Proton Calendar -
Best forPolls, bookings, and paid appointments
A scheduling-focused calendar app for polls, booking pages, reminders, and payments.
5.0/10★★☆☆☆Visit Doodle -
Best forUsers prioritizing encrypted calendar privacy
A privacy-focused calendar with sharing, invitations, and broad device support.
- Shared calendars
6.0/10★★★☆☆Visit Tuta Calendar -
Fastmail Calendar not yet scored
Best forPrivacy-focused users needing broad device access
A paid Fastmail bundle for shared calendars, invitations, and two-way external sync.
- Shared calendars
—not yet scoredVisit Fastmail -
Best forAndroid users needing a straightforward calendar
A capable free calendar for Galaxy users, with broad views and account consolidation.
- Shared calendars
4.8/10★★☆☆☆Try Samsung Calendar -
Best forOrganizations wanting an all-in-one work suite
A broad work suite that brings calendar tools into messaging, meetings, and collaboration.
4.0/10★★☆☆☆Visit Lark -
Best forOrganizations managing shared operational calendars
A flexible shared calendar for organizations that need structured scheduling and permissions.
- Time blocking
- Shared calendars
8.0/10★★★★☆Visit Teamup -
Best forFamilies coordinating schedules and household tasks
A family-focused organizer that combines shared calendars, lists, meals, and recipes.
- Video meeting support
- Shared calendars
8.0/10★★★★☆Visit Cozi -
Best forFamilies and groups sharing schedules
A social shared calendar with useful group planning tools and one-way external calendar sync.
- Shared calendars
6.0/10★★★☆☆Visit TimeTree -
Best forOrganizations publishing public calendars
A paid calendar platform for public events, shared scheduling, resources, and RSVPs.
- Shared calendars
6.0/10★★★☆☆Visit CalendarWiz
KOrganizer Alternatives: Common Questions
What is the best alternative to KOrganizer?
Google Calendar: #1 in our Calendar Apps ranking, with an editor score of 10.0 out of 10. A versatile calendar for personal schedules and Google Workspace collaboration.
Is there a free alternative to KOrganizer?
Yes. Google Calendar, Microsoft Outlook Calendar, Zoho Calendar, Notion Calendar and Nextcloud Calendar have a free plan or a free tier (13 of the 15 alternatives on this page).
What is the cheapest paid alternative to KOrganizer?
Of the alternatives here that publish a price, Google Calendar starts lowest, at $7/user/mo.
KOrganizer vs Each Alternative
| # | Tool | Free plan | Paid from | Shared calendars | Time blocking | Scheduling links | Calendar sync | Mobile apps | Score |
|---|---|---|---|---|---|---|---|---|---|
| not scored | KOrganizer | Yes | None | Yes | — | — | Two_way | — | — |
| 1 | Google Calendar | Yes | $7/user/mo | Yes | Yes | Yes | Two_way | Ios and android | 10.0 |
| 2 | Microsoft Outlook Calendar | Yes | $9.99/user/mo | Yes | — | — | One_way | Ios and android | 8.0 |
| not scored | Zoho Calendar | Yes | — | Yes | Yes | Yes | Two_way | Ios and android | — |
| 4 | Notion Calendar | Yes | None | Yes | Yes | Yes | Two_way | Ios and android | 9.0 |
| 5 | Nextcloud Calendar | Yes | — | Yes | — | Yes | Two_way | Ios and android | 8.0 |
| 6 | Proton Calendar | Yes | — | Yes | — | Yes | One_way | Ios and android | 7.0 |
| 7 | Doodle | Yes | $11/user/mo | — | — | — | — | — | 5.0 |
| 9 | Tuta Calendar | Yes | — | Yes | — | — | One_way | Ios and android | 6.0 |
| not scored | Fastmail Calendar | No | — | Yes | — | — | Two_way | Ios and android | — |
| 11 | Samsung Calendar | Yes | — | Yes | — | — | — | Android | 4.8 |
| 12 | Lark | Yes | — | — | — | — | — | — | 4.0 |
| 13 | Teamup | Yes | — | Yes | Yes | — | One_way | Ios and android | 8.0 |
| 14 | Cozi | Yes | — | Yes | — | — | One_way | Ios and android | 8.0 |
| 15 | TimeTree | Yes | — | Yes | — | — | One_way | Ios and android | 6.0 |
| 16 | CalendarWiz | No | — | Yes | — | — | One_way | Ios and android | 6.0 |
Head-to-Head
- KOrganizer vs Google Calendar
- KOrganizer vs Microsoft Outlook Calendar
- KOrganizer vs Zoho Calendar
- KOrganizer vs Notion Calendar
- KOrganizer vs Nextcloud Calendar
- KOrganizer vs Proton Calendar
Reviewed by iTechGuides Editors · Editorial team · Updated Sep 2026