Josh Pollock

Makes caching the results of a WP_Query, WP_User_Query and WP_Meta_Query, via the transients API easy. Realize increased performance, by caching the results of your queries, with one simple function.
All saved queries are automatically reset when any post is updated.
Basic usage:
<ul>
<li>Specify arguments for the query ($args)</li>
<li>Give the query a name ($name)</li>
<li>$query = jpd2_better_query( $args, $name );</li>
<li>Use $query like you would any other WP_Query object.</li>
<li>See FAQ for other usages</li>
</ul>

JPD2

Makes caching WordPress queries via the Transients API easy.

Mohammed Kassem

MAKcubes | Cache Nuke is a lightweight administrative utility designed to help site administrators clear WordPress core caching mechanisms during troubleshooting or maintenance.
The plugin focuses on: 
– Clearing WordPress transients. 
– Flushing the WordPress object cache when available. 
– Triggering cache purge hooks for some popular caching plugins, when those plugins are installed and expose public purge actions.
This plugin does not communicate with external services, does not include tracking or analytics, and runs only for authorized administrators.
<h3>License</h3>
This plugin is licensed under the GPLv2 or later.

MAKcubes | Cache Nuke

A lightweight utility plugin to clear WordPress core caches such as transients and object cache.

JPD2 vs MAKcubes | Cache Nuke