redwerks

This plugin provides a [columns] shortcode that gives a section of post content multiple columns using css3’s column properties.
The [columns] shortcode requires a closing [/columns] shortcode and accepts the arguments count=”#” to specify the number of columns and gap=”1em” to specify the gap size between columns.
Some examples:
A simple 2 column block of columns. 
 [columns count=”2″]…[/columns]
A 3 column block of columns with a 2em gap in between columns. 
 [columns count=”3″ gap=”2em”]…[/columns]

CSS Columns

Provides a [columns] shortcode that gives a section of post content multiple columns using css3's column properties.

littlejon

LJ Multi Column Archive is a WordPress plugin/widget that allows you to display your archive list with multiple columns.
I developed this plugin as I wanted to make use of the space I had in the sidebar more effectively, while still keeping the links to all the archives available.
Depending on how old you blog is you can set the Archives to display either a list of Months with Posts, a list of Years with Posts, or a list of Days with posts.
Archive links can be shown with or without post counts.

LJ Multi Column Archive

LJ Multi Column Archive is a Wordpress plugin/widget that allows you to display your archive list with multiple columns.

CSS Columns vs LJ Multi Column Archive