Ono Oogami

This little plugin allow customing the “date base” of date (month, year, day, etc.) archive page. For example, by default your blog’s monthly archive page’s permalink is like: “http://example.com/date/2010/05/”, with this plugin you can change the string “date” to others, just like the feature of changing permalink’s category base and tag base which is built in WordPress.
Note if your blog’s permalink structure is “/YYYY/mm/dd/post-slug/”, this plugin will not take effect and your blog’s permalink of date archive page would be “/YYYY/mm/”.

Date Permalink Base

Allow customing date base of archive page permalink .

thingsym

Custom Post Type Rewrite plugin adds default custom post type permalinks.
By default, there are no some permalinks of custom post type. 
The Custom Post Type Rewrite plugin adds permalink structure of custom post type. 
Following:
<ul>
<li>date-based</li>
<li>author-based</li>
<li>front</li>
</ul>
Note: Regarding has_archive and rewrite in $args of Parameters, the priority of the rewrite rule conforms to register_post_type().

Custom Post Type Rewrite

Custom Post Type Rewrite plugin adds default custom post type permalinks.

Date Permalink Base vs Custom Post Type Rewrite