Sites and apps similar to Outlook Calendar include Tuta Mail, which is open source with a free version. Other options are Google Calendar, Proton Calendar, Fossify Calendar and Tuta Calendar. There's no shortage of Calendar Apps like Outlook Calendar, with more than 50 alternatives for Android, iPhone, Windows, iPad and Mac.
Atomcal is an events management platform (calendar app) that allows you to connect with Google calendar in real time and have your events on the platform sync with your communities on Discord and Twitch.
SyncSlot was designed to solve one particular problem: to make all event attendees agree on a date and time without hassle.
vircorX unifies messenger and organizer for family and friends. You can chat, create checklists, events, reminders, notes and share them in the same app.
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OneView Calendar is an innovative take on the calendar using a proportional and infinitely zoomable timeline. Days on the calendar are proportionally sized with weeks to help you get a proper feel for your plans.
