Answer 1

notepad++

Answer 2

Ah, that's text editors. Sublime Text is the best, hands down!

Answer 3

Maybe you are looking for a different word?
HTML, CSS, PHP, and Javascript are not compiled languages and you don't need compilers. The only thing you need to get started with these 4 languages is the PHP interpreter which you can download from php.net, and a browser.

Answer 4

You really don't because HTML, CSS, PHP, and Javascript are not compiled languages. What do you want your "compiler" to do?

Answer 5

Web developers do not need compiler, they need code editor like Sublime Text.