Proton Calendar Alternatives

Proton Calendar is described as 'Your calendar is a record of your life. Proton Calendar helps keep it private' and is a very popular Calendar app in the office & productivity category. There are more than 25 alternatives to Proton Calendar for a variety of platforms, including Web-based, iPhone, Android, Mac and iPad apps. The best Proton Calendar alternative is Tuta Mail, which is both free and Open Source. Other great apps like Proton Calendar are Google Calendar, Tuta Calendar, Etar and Posteo.

More about Proton Calendar

Proton Calendar alternatives page was last updated Feb 21, 2026

DNMX
Like
DNMX or Dark Net Email Exchange is a dark net email provider that allows anyone to create an email account anonymously and receive/send emails to the clear net.
51 DNMX alternatives
Cost / License
Freemium
Proprietary
Platforms
Online
Is DNMX a good alternative to Proton Calendar?
Neocal
2 likes
Neocal is an AI-powered modern calendar app that helps you manage your busy schedule without hassle. Just tell it what you need, and it takes care of the rest, making scheduling and planning easier.
Cost / License
Free
Proprietary
Application type
Calendar
Origin
United States
Platforms
Online
Is Neocal a good alternative to Proton Calendar?
SmartyCal
Like
An AI-powered Google Calendar client for macOS with a menu bar scroller, global search, and natural language event creation.
Cost / License
Paid
Proprietary
Application type
Calendar
Origin
United States
Platforms
Mac
Is SmartyCal a good alternative to Proton Calendar?

You are at page 4 of Proton Calendar alternatives