A: Yes – the main difference is focus.
CSS Peeper is mostly about inspecting and extracting design properties fast, and Hoverify is an all-in-one inspect/edit/debug extension.
Pixefy’s USP is the responsive workflow around that – viewing multiple screens at once, testing layouts faster, reviewing changes in Activity, and sending that work to task managers or AI agents. So instead of being only an inspect tool, Pixefy is built more as a responsive QA and review workspace.