samsonw

Grid Archives offers a grid style archives page for WordPress, just put “[grid_archives]” in your Post or Page to show the grid-style archives.
The default config will display all posts in every categories. To display posts under one specific category, input [grid_archives category=”Category name”] instead.
View <a href="http://blog.samsonis.me/archives" rel="nofollow ugc">live demo</a>
For latest update, please check github repository: 
http://github.com/samsonw/wp-grid-archives

Grid Archives

Grid Archives offers a grid style archives page for WordPress.

robfelty

Create collapsible archives by year or month. Features include: link to archive pages, display of individual posts and support for custom post-types.
<h3>Demo</h3>
I use this plugin in my blog at http://blog.robfelty.com

Collapsing Archives

Very helpfull

This plugin uses Javascript to dynamically expand or collapse the set of months for each year and posts for each month in the archive listing of your  …

Grid Archives vs Collapsing Archives