OmaCal review
A capable open-source desktop calendar limited by its desktop-only scope.
Reviewed by iTechGuides Editors · Editorial team · Updated Nov 2026
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.
Questions about OmaCal
Does OmaCal have a free plan? Yes, there is a free plan.
What does OmaCal run on? macOS and Linux. It runs as a desktop app.
What does OmaCal integrate with? 3 integrations: Google Calendar, iCloud and CalDAV.
Who is OmaCal built for? Solo users and small businesses (our editorial estimate).
OmaCal pros and cons
- 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
OmaCal fact sheet, pricing and score →
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