Chrome devtools
https://news.ycombinator.com/item?id=7507323chrome-devtools://devtools/bundled/devtools.html?dockSide=undocked&toolbarColor=rgba(223,223,223,1)&textColor=rgba(0,0,0,1)&can_dock=true&updateAppcache?dockSide=undocked&toolbarColor=rgba(223,223,223,1)&textColor=rgba(0,0,0,1)&can_dock=true&updateAppcache