End-to-end encrypted app for email, calendar, and contacts, requiring no personal data, with open source code and quantum-resistant security.
- WebMail Provider
- Freemium • Open Source
- Mac
- Windows
- Linux
- Online
- Android
- iPhone
- iPad
- Flathub
- F-Droid

End-to-end encrypted app for email, calendar, and contacts, requiring no personal data, with open source code and quantum-resistant security.

Manage events efficiently with device syncing, Gmail integration, event reminders, and shareable schedules on a user-friendly interface with dark mode.

Your calendar is a record of your life. Proton Calendar helps keep it private.

Organize events with encrypted privacy, zero-knowledge and no tracking. Features include multi-device sync, multiple views, and offline support.

Connect with friends and family, share photos and videos, organize events, and join groups on a cross-platform social network offering messaging, live streaming, and more.

Material design open source calendar for Android.

Enjoy ease of scheduling with natural language event creation, sync with major platforms, visually appealing color-coded displays, and file attachment support.

From a friends and familiy birthday party to a march for climate change, today, our gatherings are trapped in the tech giants' platforms. How to get organized, how to click on “I join” without providing intimate data on Facebook or locking yourself in MeetUp?

Integrated with Notion, this standalone calendar syncs with Google Calendar, offers scheduling, multiple time zone support, and manages events efficiently.

An app and website to simply remember things.



Keep track of your busy schedule and share it with others using Calendar. Create separate calendars — one for home, another for school, a third for work, and so on. See all your calendars in a single window or choose to see only the calendars you want.

Open-source appointment scheduler offering self-hosted or hosted white-label deployments, API-driven integration, customizable features, and control over data.

Right Calendar app is a versatile scheduling tool that offers unparalleled flexibility to its users. One of its standout features is that it is built on an open-source platform. This not only ensures transparency but also allows for constant updates and bug fixes from a...



Rainlendar is a feature rich calendar application that is easy to use and doesn't take much space on your desktop. The application is platform independent so you can run it on all major operating systems: Windows, Linux and Mac OS X.

Any.do is an award-winning app used by millions of individuals, families and teams to stay organized and get more done.



Consolidates calendars, to-dos, apps, and schedulers for streamlined time management, reducing wasted time by centralizing tasks and meetings.

Create unique invitations and bring people together for life’s most exciting moments. Customize the background of your invitation with a photo from your library, or choose an emoji background to bring your event to life.

Quickly see your daily routine and manage calendar items all in one place. Visualize free time without losing sight of important events. No sign up, no tracking, no ads.

The last productivity app you'll ever need, combining events, reminders, mood tracker, notes & diary, habits, a focus timer, and more.

Luma is a platform for organizing events. It allows users to create an event page, send invites, collect registrations, and interact with guests.

nocal is for meeting-heavy people who need a calendar that helps them focus and remain highly productive.

Amie is a productivity application that facilitates task, event, and contact management, integrating a scheduling feature for task and event time allocation, and effectively transforming the calendar into a todo list, with color-coding for improved organization and visual...

HEY Calendar is a digital scheduling tool designed with a unique approach to managing time and tasks. It offers a feature that allows users to rename days according to their significance, such as designating a day as 'Travel day', 'Anniversary', or 'No work...

Ulti-Planner is a new modern calendar app with best-in-class features. We have spent years perfecting our new flagship product with speed, power, and flexibility. Features include full year, month, timeline day, week, and agenda list views to display your events and reminders...

BusyCal is the most powerful, flexible, heavily customizable, reliable calendar app for macOS. It's packed with time-saving features and compatible with all leading cloud services including Reminders, iCloud, Google, Exchange, Office 365, Yahoo, Fastmail, Fruux, Kerio, Zoom...
