Mike Jolley (a11n)

Testing your WordPress site? This plugin allows you to display memory, page load time and query count in the footer of your site on both the front-end and within admin.
This plugin is partly based upon the WP Query Counter by Steven Word (http://www.stevenword.com/plugins/wp-query-counter/) and has been customised for my testing needs.
If you’d like to contribute to the plugin you can find it on GitHub: <a href="https://github.com/mikejolley/WP-Page-Load-Stats" rel="nofollow ugc">https://github.com/mikejolley/WP-Page-Load-Stats</a>

WP Page Load Stats

Not sure why this only has 100+ users but this is a great tool!

Excellent!

Display memory, page load time, average load time and query count in the footer of your site.

PRESSMAN

Hiroshi Sekiguchi

kazunao

PM Yosuke

akihirokato

hirokazusano

kenjinakamura2

toshiroshimizu

takakageyama

Displays performance monitor, such as the Microsoft Windows Task Manager on WordPress. 
The link is made to “Admin menu” > “Tools” > “HM Monitor”.
<h4>Caution:</h4>
This plugin works only in Linux environment.

HW Monitor

Displays performance monitor, such as the Microsoft Windows Task Manager on WordPress.

WP Page Load Stats vs HW Monitor