shazdeh

Just like the way you can create custom page templates, this plugin enables you to build category archive templates by adding this bit to the top of your file:
<pre><code><?php
/**
 * Category Template: Grid
 */
?>
</code></pre>
and when you’re adding or editing categories, you can choose the desired template file.
This plugin is maintained solely for backward compatibility. Try the new <a href="https://wordpress.org/plugins/custom-taxonomy-templates/" rel="ugc">Custom Taxonomy Templates</a> instead, it supports all taxonomies and also uses the new term meta feature in WP 4.4.

Custom Category Templates

Define custom templates for category views.

Bainternet

Simple lightweight plugin that lets you select a specific template for a category each, just like page template
any feedback or suggestions are welcome.
check out my <a href="http://en.bainternet.info/category/plugins" rel="nofollow ugc">other plugins</a>

Custom Category Template

This plugin lets you select a specific template for a category, just like pages

Custom Category Templates vs Custom Category Template