Tracy

Debug Bar.

Renders a beautiful error/exception page with syntax-highlighted stack trace.

Debugger: displays and logs errors.

Built-in IBarPanel implementation backed by compiled .phtml templates.

Dumps a variable.

File-based session storage using a cookie-identified lock file.

Rendering helpers for Debugger.

Logs messages and exceptions to files and sends email notifications on critical errors.

Session storage backed by native PHP session ($_SESSION).

Debugger for outputs.

Tracy Bar panel providing a tab label and optional panel content.

Logs messages and exceptions with a severity level.

Persistent storage for Tracy debug session data (deferred Bar and BlueScreen content).