The MozBar Chrome Extension remains the gold standard for on-the-go SEO research, but the 2025 version (V4) introduces features designed for a post-AI search world:

With the rise of XR (Extended Reality) headsets, 2D developer tools are becoming obsolete. MozTool 2025 prototypes a spatial inspector, allowing developers to walk through their DOM structures in a 3D space, identifying layout thrashing and z-index wars visually.