Luke Rumley

This plugin allows you to assign a theme to a specific category. It is actually @MikeLopez’s code, I just tweaked it to work on WordPress 3+.
This version adds child theme capability, and the ability to assign a theme to a new category as it is created. It also ignores pages and the home page, so the current theme is applied there.

GYS Themed Categories

This plugin allows you to assign a theme to a specific category.

Samuel Wood (Otto)

Simon Prosser

acosmin

KafleG

Carolina Nymark

The theme check plugin is an easy way to test your theme and make sure it’s up to spec with the latest <a href="https://make.wordpress.org/themes/handbook/review/" rel="nofollow ugc">theme review</a> standards. With it, you can run all the same automated testing tools on your theme that WordPress.org uses for theme submissions.
The tests are run through a simple admin menu and all results are displayed at once. This is very handy for theme developers, or anybody looking to make sure that their theme supports the latest WordPress theme standards and practices.
<h4>How to enable trac formatting</h4>
The Theme Review team use this plugin while reviewing themes and copy/paste the output into trac tickets, the trac system has its own markup language. 
To enable trac formatting in Theme-Check you need to define a couple of variables in wp-config.php: TC_PRE and TC_POST are used as a ticket header and footer. 
For example:
<pre><code>define( 'TC_PRE', 'Theme Review:[[br]]
- Themes should be reviewed using "define(\'WP_DEBUG\', true);" in wp-config.php[[br]]
- Themes should be reviewed using the test data from the Theme Checklists (TC)
-----
' );

define( 'TC_POST', 'Feel free to make use of the contact details below if you have any questions,
comments, or feedback:[[br]]
[[br]]
* Leave a comment on this ticket[[br]]
* Send an email to the Theme Review email list[[br]]
* Use the #wordpress-themes IRC channel on Freenode.' );
</code></pre>
If either of these two vars are defined a new trac tickbox will appear next to the Check it! button.

Theme Check

Theme-Check is an essential tool for any developer who wants to create a theme which is up to scratch with the theme review standards and which uses the latest WordPress functions.
It will help you change any deprecated functions to the the new versions and also provides info and recommendations about your theme.
All theme authors should run this on their themes before releasing publicly.



Essential for any Theme Developer

Very useful

One of the best plugins for theme developers. Really a very good job!
Have you never thought to create a similar plugin to check plugins?
Plugins developers would also need a so helpful tool.

Perfect!

We regularly use Theme Check for the development of all Organic Themes. Thanks for creating and maintaining such a useful plugin!

A Necessity For Theme Developers

A simple and easy way to test your theme for all the latest WordPress standards and practices. A great theme development tool!

GYS Themed Categories vs Theme Check