Useful debugging
A focus on presenting information in a useful manner, for example database queries grouped by the responsible plugin, theme, or function.
Debugging starts with Query Monitor.
The developer tools panel for WordPress.
Skip to content 
Free and open source
Query Monitor is free and open source software, just like WordPress.
Trusted by the enterprise
Query Monitor is included on some of the most high-trafficked WordPress platforms in the world, including Altis and WordPress VIP.