BusyCal 1.3.1が出ていました。iCal互換カレンダー。シェアウェア（$49）。

BusyCal 1.3.1 Release Notes

July 6, 2010

What’s new:

• Fixed bug in Week View when dragging events
• Added Overwrite Sync Services button to fix syncing errors on Snow Leopard
• Fixed bug where recurring ToDos were not showing up in Alarms menu
• Fixed crash that could occur on first launch if prefs corrupted
• Fixed crash that could occur when deleting duplicates
• Fixed bug when syncing Birthdays calendar on LAN
• Added more Help documentation
• Localization improvements
• Other minor enhancements and bug fixes

For more info, see the Release Notes History.