OmaCal

Free#123 of 193 in Calendar Apps

OmaCal: A capable open-source desktop calendar limited by its desktop-only scope. Ranked #123 of 193 in Calendar Apps by our editors (3.0/10); pricing: Free plan; best for desktop users wanting open-source calendar control.

3.0/10★★☆☆☆Editor score

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At a glance

• Editor score
  3.0 / 10
• Pricing
  Free plan
• Best for
  Desktop users wanting open-source calendar control
• Free plan
  Yes
• Paid from
  Free
• Facts checked
  22 Sep 2026

• Where it wins

  • Supports Google Calendar, iCloud, and CalDAV
  • Offers multiple accounts, recurring events, RSVPs, and tasks
  • Stores data locally and includes a command-line interface

• Where it doesn't

  • Available only on macOS and Linux desktops
  • Has no mobile apps
  • Does not provide scheduling links or video support

Our verdict on OmaCal

OmaCal is a free, open-source desktop calendar for people who prefer a native application over a browser tab. It runs on macOS and Linux and connects with Google Calendar, iCloud, and CalDAV servers. Its audience includes solo users and small teams managing multiple calendar accounts, especially those who want local data storage and direct control over calendar information rather than a service using vendor servers.

Its main strength is the combination of broad calendar management and open-source desktop control. OmaCal provides day, week, month, year, and Big Year views, plus event creation, editing, deletion, recurring-event scopes, search, list mode, reminders, invitations, and guest RSVP responses. Multiple accounts can be managed with per-calendar display and fetch controls. CalDAV task-list synchronization extends the application beyond events, while the command-line interface supports reading and modifying calendar data. For users already working across Google Calendar, iCloud, or CalDAV, this makes OmaCal a focused calendar hub with two-way synchronization.

The trade-off is a narrow platform and collaboration scope. OmaCal has no mobile apps, and it does not include scheduling links or video support, so it is less suitable for people who coordinate meetings across devices or need built-in meeting workflows. Support is available through email and community channels. Users seeking an open-source desktop calendar with multiple account connections, local storage, and command-line access should consider OmaCal; those prioritizing mobile coverage, scheduling links, or video meetings should choose a broader calendar platform instead.

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OmaCal pricing

All 1 OmaCal plans and prices →

OmaCal fact sheet

OmaCal integrations

OmaCal lists 3 integrations on its own site.

• Google Calendar
• iCloud
• CalDAV

Alternatives to OmaCal

• Google CalendarA versatile calendar for personal schedules and Google Workspace collaboration.9.4
• Microsoft OutlookA flexible calendar choice for people and teams already working in Microsoft’s ecosystem.9.2
• Zoho CalendarA low-cost calendar with booking, sync, room reservations, and broad integrations.9.1

See all OmaCal alternatives →

Featured on iTechGuides

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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.

Last updated 7 Oct 2026 · How we research and update