ABBU is the native file type for the Mac OS X Address Book, which means that you can only open ABBU files using the Mac Address Book application. However, you can use the iWork Numbers application to ...

Storing data in a structured way is important when that data will be read by a computer. One of the easiest ways to put data into an easy-to-read format is with a comma-separated value (CSV) file. A ...

You can create a release to package software, along with release notes and links to binary files, for other people to use. Learn more about releases in our docs.