Content Stats
Content Stats is a simple widget that tells you how many entries have been created in your Channel and Structure sections. There are three levels of details that show you entry count, counts of different entry statuses, and a count of different entry types within a section.
Clicking on a section name or section total takes you to the entries listing for that section within the Craft's CP.
Free
Package Name
To install this plugin, search for its package name on the Plugin Store and click “Install”.