This is a modified version of Archives Calendar Widget for WordPress. I will try to patch any updated done to the original plugin and will concentrate on providing additional features.

Extra Features:

• Popover jQuery plugin integrated in order to show the titles of a day’s posts rather than leading right into the archives.
• Except from title, an image related to the post is shown. It’s either the featured image or the first image in post.

Special thanks to Aleksei Polechin for his original plugin (You can find him here: http://alek.be/)