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Privacy Tools

Encrypted Calendars That Respect Your Privacy by Design

The most reliable source for privacy tools since 2015. Software, services and privacy guides to fight surveillance with encryption for better internet privacy.

Proton Calendar: Manage your agenda and keep data private
Audited Encrypted Android Bitcoin Affiliated

Select the "Mail Plus" or "Proton Unlimited" paid plans for more features. Featured in our Top 10 Out-of-the-Box Privacy Tools list.

Tutanota: Free, Cross-Platform and Zero-Knowledge Calendar
Encrypted Win Android iOS Mac Linux Bitcoin
Peergos: Encrypted Shareable Calendar For Your Browser
Audited Encrypted Bitcoin

Audited by Cure53 in May 2019.

EteSync: Securely sync your contacts, calendars, tasks and notes
Encrypted Paid Plan Bitcoin Android iOS Hosted Self-Hosted

If you decide to self-host EteSync you won't have to pay for the subscription. Tutorial here.

Privacy tools listed on this page are all open-source unless marked otherwise: Criteria.

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