Calendar

Plans where they belong — in your suite.

Shared calendars, invitations, and free/busy lookup — over open CalDAV. No proprietary plug-in to install. Sync to Apple Calendar, Thunderbird, DAVx⁵, or your phone, and keep every event in lockstep.

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Shared calendars

Calendars that match how the team actually works.

Personal calendars for your own time, shared calendars for the team, and as many as your org needs. Month, week, and day views in the web app — recurring events, all-day events, time-zone awareness, the basics done right.

  • Multiple calendars per user — personal, project, on-call rotation, whatever you need.
  • Shared with named teammates or whole org, with read or write permissions.
  • Recurring events with all the standard rules — every Tuesday, third Friday of the month, end of every quarter.
  • All-day events and time-zone-aware events, both honoured across clients.
  • Web app with month, week, and day views — keyboard shortcuts included.

Open by design

CalDAV under the hood. Your client of choice on top.

Verkio Calendar speaks CalDAV — the same protocol Apple Calendar, Thunderbird, and DAVx⁵ already know. No proprietary connector to download, no 'works best in our app' sleight of hand. Use the web app, the client you already have, or both.

  • Sync to Apple Calendar on macOS and iOS — drop-in setup, no extension.
  • Sync to Thunderbird via built-in CalDAV — your existing mail client gets your calendar.
  • Sync to DAVx⁵ on Android — full two-way over a single account.
  • iCalendar import and export so calendars round-trip cleanly when you move.

Invites that work

iMIP invitations, not screenshots.

Send standards-compliant iMIP invitations and your invitees can RSVP from any standard mail or calendar client — Gmail included. Free/busy lookup across your team, so you stop the 'are you free at 2?' thread before it starts.

  • iMIP invitations (RFC 6047) that work in Gmail, Outlook, Apple Calendar, and Thunderbird.
  • RSVP statuses (accepted, tentative, declined) tracked and updated in real time.
  • Free/busy lookup across teammates — find a slot without screen-sharing your calendar.
  • Calendar polls on the roadmap (Q2 2027) for when free/busy isn't enough.

Open standards

RFCs all the way down.

Verkio Calendar is built on the same open standards your existing tools already speak. Bring your client. Take your calendar with you when you leave.

  • CalDAV (RFC 4791)
  • iCalendar (RFC 5545)
  • iMIP (RFC 6047)
  • iTIP (RFC 5546)
  • VTIMEZONE
  • TLS 1.3

Launching July 2026

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We'll be in touch when Verkio opens.