WebGDBp is a free Chrome add-on that enables developers to debug PHP code directly within the browser. It utilizes the gdbp protocol and supports XDebug and similar extensions, allowing users to bypass traditional IDEs for a more streamlined debugging experience. The tool is still in beta, meaning users may encounter bugs as it continues to be refined.

Key features include a responsive Tree View for viewing variables and a sophisticated code viewer with syntax highlighting. Users can add or remove breakpoints during execution, enhancing their debugging workflow. The latest update introduces synchronized breakpoints with TextMate2, an improved user interface, and enhanced accessibility features. Future updates promise even more integration with various text editors and usability improvements.