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Best Merkuro Calendar (formerly Kalendar) Alternatives in 2026

Updated

20 apps from calendar apps ranked against Merkuro Calendar (formerly Kalendar) on the same published basis.

  1. 1
    Twake Calendar Free plan Open sourceAndroidapiiOSLinuxMac €4/mo9.3
    Merkuro Calendar (formerly Kalendar) vs Twake Calendar
  2. 2
    Mozilla Thunderbird Free plan Open sourceAndroidLinuxMacWin Free8.9
    Merkuro Calendar (formerly Kalendar) vs Mozilla Thunderbird
  3. 3
    Microsoft Outlook Calendar Free plan AndroidiOSMacWeb $1.67/mo8.2
    Merkuro Calendar (formerly Kalendar) vs Microsoft Outlook Calendar
  4. 4
    Tuta Calendar Free plan AndroidiOSLinuxMacWeb €3/mo8.2
    Merkuro Calendar (formerly Kalendar) vs Tuta Calendar
  5. 5
    Lark Free plan AndroidapiiOSLinuxMac 8.2
    Merkuro Calendar (formerly Kalendar) vs Lark
  6. 6
    EGroupware Free trial Open sourceWebLinuxWinMac €21.90/mo8.2
    Merkuro Calendar (formerly Kalendar) vs EGroupware
  7. 7
    Zoho Calendar Free plan AndroidiOSWeb Free8.0
    Merkuro Calendar (formerly Kalendar) vs Zoho Calendar
  8. 8
    Proton Calendar Free plan AndroidiOS Free8.0
    Merkuro Calendar (formerly Kalendar) vs Proton Calendar
  9. 9
    TimeFinder Free plan AndroidiOSMacWebWin Free8.0
    Merkuro Calendar (formerly Kalendar) vs TimeFinder
  10. 10
    Notion Calendar Free plan AndroidiOS Free7.9
    Merkuro Calendar (formerly Kalendar) vs Notion Calendar
  11. 11
    Teamup Free plan AndroidapiiOSLinuxMac $12/mo7.9
    Merkuro Calendar (formerly Kalendar) vs Teamup
  12. 12
    Cozi Free plan AndroidiOSWeb $3.25/mo7.9
    Merkuro Calendar (formerly Kalendar) vs Cozi
  13. 13
    TimeTree Free plan AndroidiOSWeb $3.75/mo7.9
    Merkuro Calendar (formerly Kalendar) vs TimeTree
  14. 14
    Fantastical Free plan iOSMacWin Free7.9
    Merkuro Calendar (formerly Kalendar) vs Fantastical
  15. 15
    Calendar.com Free plan AndroidapiextensioniOSWeb $20/mo7.9
    Merkuro Calendar (formerly Kalendar) vs Calendar.com
  16. 16
    Doodle Free plan Web $11/mo7.8
    Merkuro Calendar (formerly Kalendar) vs Doodle
  17. 17
    KOrganizer Free plan Linux Free7.8
    Merkuro Calendar (formerly Kalendar) vs KOrganizer
  18. 18
    Samsung Calendar Free plan Android Free7.8
    Merkuro Calendar (formerly Kalendar) vs Samsung Calendar
  19. 19
    Reclaim AI Free plan extensionWeb $10/mo7.8
    Merkuro Calendar (formerly Kalendar) vs Reclaim AI
  20. 20
    FlowSavvy Free plan AndroidiOSWeb 7.8
    Merkuro Calendar (formerly Kalendar) vs FlowSavvy

Merkuro Calendar (formerly Kalendar) alternatives compared

#AppScoreFree planFromRuns on
1Twake Calendar9.3Free plan€4/moAndroid, API, iOS, Linux, Mac, self-hosted, Web, Windows
2Mozilla Thunderbird8.9Free planFreeAndroid, Linux, Mac, Windows
3Microsoft Outlook Calendar8.2Free plan$1.67/moAndroid, iOS, Mac, Web
4Tuta Calendar8.2Free plan€3/moAndroid, iOS, Linux, Mac, Web, Windows
5Lark8.2Free planAndroid, API, iOS, Linux, Mac, Web, Windows
6EGroupware8.2€21.90/moWeb, Linux, Windows, Mac
7Zoho Calendar8.0Free planFreeAndroid, iOS, Web
8Proton Calendar8.0Free planFreeAndroid, iOS
9TimeFinder8.0Free planFreeAndroid, iOS, Mac, Web, Windows
10Notion Calendar7.9Free planFreeAndroid, iOS
11Teamup7.9Free plan$12/moAndroid, API, iOS, Linux, Mac, Web, Windows
12Cozi7.9Free plan$3.25/moAndroid, iOS, Web
13TimeTree7.9Free plan$3.75/moAndroid, iOS, Web
14Fantastical7.9Free planFreeiOS, Mac, Windows
15Calendar.com7.9Free plan$20/moAndroid, API, Browser, iOS, Web
16Doodle7.8Free plan$11/moWeb
17KOrganizer7.8Free planFreeLinux
18Samsung Calendar7.8Free planFreeAndroid
19Reclaim AI7.8Free plan$10/moBrowser, Web
20FlowSavvy7.8Free planAndroid, iOS, Web
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Questions about Merkuro Calendar (formerly Kalendar) alternatives

What is the best alternative to Merkuro Calendar (formerly Kalendar)?

Twake Calendar, number 1 in calendar apps with a score of 9.3 out of 10. The others here: Mozilla Thunderbird, Microsoft Outlook Calendar, Tuta Calendar and 16 more.

What is the best free alternative to Merkuro Calendar (formerly Kalendar)?

Twake Calendar is the best-ranked alternative with a free plan. 19 of the 20 alternatives here publish a free plan on their own pricing pages.

Is there an open-source alternative to Merkuro Calendar (formerly Kalendar)?

Yes: Twake Calendar, Mozilla Thunderbird, EGroupware.

How are these alternatives ranked?

Ranked free-and-open first: a usable free tier and open-source code, then the platforms it runs on and its documentation.