There is a great value-added  plugin named Users2csv which does exactly as it name describes. It dumps the entire users list to a CSV file which can be opened using any calculation app such as excel, open office, numbers, etc… Then the data can be sued for whatever purpose you desire.

Using the plugin is simple.

1. Click the left menu on the users2csv link.

2. Click on the export users link and you are done.

The file  is then available for use at the location you specified in the export process (unless your browser is set to automatically download to a specific directory e.g. “Downloads” – then the file will naturally be there).