A free app for Android, by Alterora OÜ.

This app can be used to export contacts to a text file or to an Excel spreadsheet.

The first step is to select the contacts that you want to export, either from your phone’s contact list or from a file that you have created with a text editor. The export format is determined by the file type that you have chosen. In the case of a text file, it is possible to choose between the standard format, which is compatible with most text editors, or the more convenient XML format, which can be used with programs such as Excel or OpenOffice Calc.