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 50 alternatives to Proton Calendar for a variety of platforms, including Web-based, Android, iPhone, Mac and iPad apps. The best Proton Calendar alternative is Google Calendar. It's not free, so if you're looking for a free alternative, you could try Google Calendar or Tuta Calendar. Other great apps like Proton Calendar are Posteo, KashCal, Nextcloud Calendar and Apple Calendar.
Your daily schedule is created from your logged Activities. Comfortably browse what activities you have planned for the day on the main “day” page. Watch them light up as you go through your day and collect streaks for each day you plan.
United States
Calendarscope is a full-featured calendar software for planning, managing, and scheduling appointments, meetings, birthdays, vacations, special events. It allows you to view all your events in a daily, weekly, monthly, or yearly overview.
Russia
newDay is an experimental timekeeping and calendar system that helps users to set intentions for each of the ten newHours that comprise a newDay.
Create calendar events & reminders instantly by speaking, snapping photos, or pasting text or websites in multiple languages or use the AI scheduler to receive intelligent suggestions.
Access your calendar via access links without a login. For your calendar you get several access links for which you can set individual permissions (e.g. read or write).
Germany
EU
lightweight, client-only calendar web application. All data persists in the URL hash for instant sharing, No backend required. Optional AES-GCM password protection keeps shared links locked without a server.
Sri Lanka
muCalendar is a lightweight, open-source desktop calendar application built for users who value privacy and simplicity. It brings your remote calendars — whether self-hosted or cloud-based — into a clean, native desktop experience.
FranceEU
Life changes, and so should your ability to plan around it. TinyMonth is a simple zoomed-out calendar. It lets you pencil in dates, switch things around, and share it simply.
United States
United Kingdom
