Instead of Tuta Calendar
Tuta Calendar alternatives
Tuta Calendar brings appointments, business meetings, and repeating tasks together with end-to-end encryption for events, invitations, shared calendars, and push reminders. Its reminders can arrive offline without appearing in the phone operating system. Shared calendars support read-only, read-and-write, and sharing-management access, while external invitations can use a shared password. Imported calendars sync automatically across devices, and integration with Tuta email and contacts keeps communication nearby. Two-factor authentication, open-source clients, zero-knowledge architecture, and German data centers reinforce its privacy focus.
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Mozilla Thunderbird
by Mozilla ThunderbirdFree plan Open source AndroidLinuxMac+1Free desktop calendar with offline access — Thunderbird is a free, open-source app with offline access, scheduled sending, unified inbox, and calendar tools, unlike Tuta’s encrypted calendar focus.
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Microsoft Outlook Calendar
by Microsoft Outlook CalendarFree plan AndroidiPhoneMac+1Calendar with integrated video meetings — Outlook Calendar adds video meeting support and web, desktop, and mobile access, while Tuta emphasizes encrypted calendar functions.
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EGroupware
by EGroupwareFree plan Open source AndroidAPIiPhone+5Open-source shared calendars with two-way sync — EGroupware offers open-source shared calendars with two-way sync and video meetings, but no mobile apps.
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Zoho Calendar
by Zoho CalendarFree plan AndroidiPhoneWebScheduling links and two-way calendar sync — Zoho Calendar provides scheduling links, time blocking, two-way sync, and video meetings across web and mobile.
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Proton Calendar
by Proton CalendarFree plan AndroidiPhoneMobile privacy-focused calendar with scheduling links — Proton Calendar offers scheduling links and video meetings but supports only Android and iOS, compared with Tuta’s broader platforms.
Free plan Visit site - 7
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Structured
Free plan AndroidiPhoneMac+1 - 12
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Fantastical
Free plan iPhoneMacWindows - 17
FlowSavvy
Free plan AndroidiPhoneWeb - 18
Amie
Free plan APIExtensioniPhone+3 - 19
Vimcal
Free plan iPhoneMacWeb+1 - 20
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Informant
Free plan AndroidExtensioniPhone+2
An alternative may fit better if one calendar on the free plan, one-way synchronization, or the €3/user/mo starting price does not suit you. Tuta supports Android, iOS, Linux, macOS, web, and Windows, but other services add two-way sync, scheduling links, time blocking, video meetings, workplace chat, documents, or broader integrations. Compare the collaboration tools, device coverage, free access, and subscription terms you need before moving shared events.