I wanted to try this out, and the closest thing I found is this bookmarklet for Chrome: https://github.com/chrisprice/explodz https://github.com/chrisprice/exp

I wanted to try this out, and the closest thing I found is this bookmarklet for Chrome: https://github.com/chrisprice/explodz https://github.com/chrisprice/explodz It appears to still work and it even sort-of works on Firefox except for the mouse-click feature that shows the sides. Clearly not as polished as the old Firefox feature though.