HTML Inspector1.0

Perfect tool for website designers and developers... You need to be competent in html, css, and javascript in order to use it efficiently.

Good for every web designer and developer, as well as it is a perfect tool for new html, css, and javascript learners, being one of them myself. The application is easy to use, and works very well. Some parts are a bit sloppy, but being at version 1.0 this can always happen.
Though is doesn't teach you html and css, it is assumed that you are already familiar with all these properties in order to make a good use of it. The application provides you with the facilities to manipulate them easily.
There is no need to embed the whole java runtime environment. As 200MB are too much to download for a simple application. But as I understand that Apple is phasing out all java files from its operating system, so they are encouraging developers to embed the runtime in their applications.
Perhaps the developers can provide 2 versions for download, one with and without the java runtime environment, so that people who have java already installed on their machines can download the slim version.
All in all, it is a good tool for anyone who deals with html documents and website development.

Perfect tool for website designers and developers... You need to be competent in html, css, and javascript in order to use it efficiently.

The price is wrongly listed as free... It is $49.00 or €40.00 or £35.00.

It does what it says, and it does it very well. Including the entire java runtime is a requirement by Apple.