SiteStacks for Firefox is a lightweight, yet powerful browser extension to reveal the technology behind any website.
Really quick and lightweight way to know a site's stackCons:
Database still needs to grow
It's as easy as you can see: just add an extension, and when you click on the icon you get a new tab listing the stack of that site. However, as the makers state, the database of stack still needs to grow to detect more things. It looks like in a few weeks / months will have this issue solved and this will be a rock-solid plugin.Ángel Blanco has used this product for one day.