ShiftKing

ShiftKing is a Chrome extension that lets you record and edit your work shifts on a calendar. It supports per-day shift entries, notes, color coding, and a convenient home widget to view your schedule at a glance.

The extension includes annual leave calculations, the ability to build a shared shift database for colleagues, and support for non-periodic shifts by submitting schedules to your developer. It also integrates with iPhone calendar events and shows public holidays to keep your planning accurate.