Itsycal

Itsycal puts a small calendar in the menu bar that shows events from whatever calendars you already have set up in macOS Calendar, and lets you create new ones without switching apps.

Why it makes the list

It's the free, no-account option in this lineup — open source under the MIT license, with nearly 4,000 GitHub stars and over a decade of steady updates from its single maintainer.

Key features

• Shows and creates events/reminders from your macOS Calendar accounts
• One-click join for video meetings found in event details
• ISO week numbers and a replaceable menu-bar clock
• Keyboard controls, including Vim-style motions, plus a configurable shortcut to open the calendar
• Jump to any date, shows up to two months at once
• URL scheme support and dark mode

Pricing

Free and open source (MIT license). Direct download or brew install --cask itsycal.