This widget shows a list of all of the users that have written content on your site, since a static or dynamic time specified by you.
This plugin is maintained on GitHub, so feel free to use the repository for reporting issues, submitting feature requests and submitting pull requests.
This widget displays a list of all of the users that have written content on your site recently, where you can specify the point in time after which you want to consider posts for inclusion in the widget.
The widget options are:
I also run Do It With WordPress, which has an array of tutorials for managing, modifying and maintaining your WordPress sites, as well as The WP Butler, a service for keeping your site maintained, backed up, updated and secure.