Export Calendars Pro will let you easily export events and reminders from your Mac's Calendar and Reminders apps to an Excel file, CSV file, tab-delimited text file or straight to the clipboard. But it's not just any export tool: It lets you export special fields like an event's duration, which is great for determining your billable hours. It also lets you export any contact property for any participant for an event from your Address Book.

Importer for Contacts picks up where Apple Contacts left off by importing Excel files, CSV files, tab-delimited files, and vCards into "Contacts" with more options.

Exporter for Contacts (was Export Address Book) is a popular and powerful Mac app to export contact data from Apple's Contacts into various formats, capable of organizing export setups in customizable templates to make repeated exports a lot easier. The app lets you export selected contacts, groups, and whole address books to a CSV or a native Excel file (great for importing stuff into FileMaker), and many, many other formats, such as tab-delimited text, HTML, XML+XSLT, and customizable vCards. It lets you decide which contact fields will be exported and in what order. The app comes with predefined export templates for common applications such as Outlook for Windows or Gmail.