Cocos Inspector is a plugin of CocosCreator， support v2.x and v3.x, it has a stand-alone electron window, not a browser extension;
it supports realtime node tree display and control, and drawcall num show of almost every node, and show & edit beautiful components detail of selected node
directly choose 2d & 3d node by hover node in scene, if hover mode is openning;
and supports break on node events by node tree context menu;
or disable auto update of partial node at there.
because there is too many useful features in the version history of plugin page
so, i will not show all features in this post, if u have any question, can reply this post.
if u know chinese, u can get more information of chinese forum: