Greg Winiarski

BlackBox is symfony like unobstrusive debug bar attached to the top of the browser window.
How can it help you with development: 
1. instantly inspect global variables (GET, POST, COOKIE, SERVER) 
2. debug both frontend and admin area 
3. executed MySQL queries and time it took to execute each query (useful for finding slow queries) 
4. profiler for measuring performance of your plugins and themes 
5. errors occurred when loading WordPress page

BlackBox Debug Bar

Immediate feedback on a great majority of errors. Added a conditional red background to the Errors, and with this modification I have never miss even a notice anymore.

Thank you very much!

Essential plugin in my developer toolset

BlackBox is a plugin for plugin and theme developers. It collects and displays useful debug information (errors, executed queries, globals, profiler).

Gemini Labs

Paul

Black Bar is an unobtrusive Debug Bar for WordPress developers. It collects and displays errors, executed SQL queries, slow actions and hooks, theme templates, global variables, and provides a profiler.
How it helps you with development:
<ul>
<li>Debug your code with the Console</li>
<li>Inspect global variables (COOKIE, GET, POST, SERVER, SESSION, WP_Screen)</li>
<li>Measure performance of your code with the Profiler</li>
<li>View any PHP errors that occur when loading a page in the Console</li>
<li>View executed MySQL queries along with execution time and backtrace</li>
<li>View template files of the active theme in loaded order</li>
<li>View the 50 slowest action and filter hooks along with callbacks ordered by priority</li>
</ul>

Black Bar

Thank you for giving new life to BlackBox Debug Bar!

Not only the usefulness of this plugin, but the beautiful PHP coding leads me to write this review. I have learnt a lot from your code.

Developer must have

Il fait l'affaire haut la main, parfait ;-)
It did the trick, perfect ;-)


Indispensable / Essential

Black Bar is an unobtrusive Debug Bar for WordPress developers that attaches itself to the bottom of the browser window.

BlackBox Debug Bar vs Black Bar