Basic plugin profiler. Benchmarks response times with and without a given plugin activated.

See which plugins are slowing down your site. This plugin creates a performance report for your site.

Used to profile MySQL queries for performance; with backtrace information for each query (caller functions, lines, file names etc.)

Indabug is the debug console for WordPress.

Lists WordPress require() calls mainly for plugin code refactoring.

Provides debugging information and insight into your WordPress application. Displays a list of all hooks fired (with arguments passed) on the current page, peak memory usage, SQL queries executed, some basic information about PHP and information about the current theme.

Gravity Forms Add On. Adds custom tabindex field to the "Advanced" tab for form fields.

A profiler to measure the performance of your WordPress plugins and themes.

A Wordpress plugin to integrate your Gravity Forms with Profiler CRM.