Codeboxr Dashboard Widget Manager is WordPress plugin that will help you to show or hide dashboard widget and add as many widgets as you want..
There is custom post type for custom html dashboard widget which you can enable or disable and all of these post will be shown as widgets in dashboard in your selected position like Normal-High Side-Core etc..
1.Last modified post Which shows last modified posts of your selected post type.
2.Recent comments reloaded Which shows recent comment of any post type.
3.Recents posts Which shows recent posts of any post type.
Custom post type to create any dashboard widget, it will help you to create any notice in dashboard area.
How to install the plugin and get it working..
Activate the plugin through 'Plugins WordPress.
From 'settings link select which widget you want to hide, enable custom post type and custom widgets.
Browse the code, check out SVN repository, or subscribe to the development log by RSS...
Read more