OneCalendar is a calendar app for managing appointments, syncing with multiple calendar services, and sharing events.

Is OneCalendar open source?

No. OneCalendar is proprietary (closed-source) software. In the Productivity category, open-source options include PowerToys, Files and ShareX.

What are some alternatives to OneCalendar?

OneCalendar competes with Apple Calendar.

OneCalendar: features, pricing and alternatives

About OneCalendar

OneCalendar is a calendar application that helps users manage appointments, view a clear overview, set up meetings and recurrences, and share appointments. It supports multiple calendar services including Google Calendar, Outlook, Office 365, Exchange, iCloud, CalDAV, Yahoo, GMX, Synology, Nextcloud, ownCloud, and Mailbox.org. The app is available on Android 6 and higher, iPhone, iPad, Mac, and Windows 10 & 11.

Key features

Manage appointments
Invite people to events
Set up recurring events
Share appointments via WhatsApp or other methods
Work offline
Supports multiple calendar services (Google, Outlook, iCloud, etc.)

Tags: calendar; appointments; sync; offline; android; ios; windows; mac

OneCalendar: questions and answers

What is OneCalendar?: OneCalendar is a calendar app for managing appointments, syncing with multiple calendar services, and sharing events.
Is OneCalendar open source?: No. OneCalendar is proprietary (closed-source) software. In the Productivity category, open-source options include PowerToys, Files and ShareX.
What are some alternatives to OneCalendar?: OneCalendar competes with Apple Calendar.