Best ProtonCalendar Alternatives & Competitors in 2024

Spend less time managing your day & more time enjoying it

Material design open source calendar for Android.

The #1 email warming service to improve your deliverability by generating realistic and meaningful engagement to your emails. Easy-to-use solution to help you land in the main inbox instead of the spam folder.

Visit website paid $19.5 / Monthly (Pro)

The Calendar app is a user interface for Nextcloud's CalDAV server.

Open Source

All of your commitments, now in one place. Meet the beautifully designed, fully integrated calendar for your work and life.

Rainlendar - Customizable desktop calendar

A simple calendar with events (optional recurring and reminders), week numbers and a customizable...

Open Source

Quickly access a monthly calendar from your menu bar.

Organize your world. Outlook’s email and calendar tools help you communicate, stay on top of what matters, and get things done.

Calendar is a personal calendar app made by Apple Inc. that runs on both the macOS desktop operating system and the iOS mobile operating system.

All-in-one Calendar, Tasks & Scheduler. Morgen is the single hub for everything that revolves around time management.

Get your encrypted mailbox for free.

Open Source

Calendar Lock PEA is an encrypted desktop calendar with a day, week and month view. The shown calendars are never stored unencrypted on your disk, but exist only in the RAM. Platform-independent, Open Source, no installation or registration required.

Open Source

Make meetings happen. With Doodle, scheduling becomes quick and easy.

freemium $6.95 / Monthly (1 User)