Calendar

A shared team calendar with two-way sync to Google, Outlook, and Apple. Free for every user.

A shared team calendar with two-way sync to Google, Outlook, and Apple. Atlas Calendar is a full-featured shared calendar built for teams — create and manage events, set up recurring schedules, share calendars across your organization, and link events directly to CRM contacts, all from one place.

Your calendar shouldn’t be a silo.

Most businesses already have calendars somewhere — Google Calendar, Outlook, iCloud. Asking your team to abandon those and switch entirely to something new doesn’t work. People end up maintaining two calendars, or ignoring one of them.

Atlas Calendar is built to coexist. It syncs both ways with Google Calendar, Outlook Calendar, and Apple iCloud. Create an event in Atlas and it appears in Google within minutes. Accept a meeting invite in Outlook and it shows up in Atlas. Your team keeps using whatever they’re already using — Atlas just keeps everything in sync.

For Apple Calendar and Thunderbird users, there’s nothing to configure. Atlas runs a native CalDAV server. Add it to your calendar app the same way you’d add any other CalDAV account and it works.

What’s included.

  • Two-Way Sync — Connect Google Calendar, Outlook, or iCloud. Changes in either direction stay in sync automatically.
  • Native CalDAV — Apple Calendar, Thunderbird, and any standard CalDAV client connect directly. No plugins required.
  • Shared Team Calendars — Create calendars for teams, projects, or rooms. Set per-user read or write permissions.
  • Recurring Events — Full recurrence support — daily, weekly, monthly, yearly, and custom RRULE patterns, with per-occurrence editing.
  • Attendee Management — Invite attendees to events and track accept, decline, and tentative responses.
  • Tasks — Create and manage task lists alongside your calendar. Assign due dates, set priorities, and track completion.
  • CRM Integration — Link calendar events directly to Atlas CRM contacts and entities.
  • File Attachments — Attach files from AtlasFS directly to events, accessible to all attendees with access.
  • Import — Bring in existing events from an ICS file, Google Calendar, or Outlook in one step.

Free. No catch.

Free
For Every User

No per-user fee, no setup fees, no contracts. Included with your Atlas account.

Available now.

Atlas Calendar is in production. You can start using it today — connect your existing Google, Outlook, or Apple calendar and keep working the way you already do.

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