Coding Editors

Here are a bunch of coding editors, which might be useful:

General

Notepad ++ is a free must have for Windows computers. It is very useful for general purposes and can easily be extended with useful plugins.

Java

IntelliJ IDEA from JetBrains is pretty useful for Java Projects. There is a free and a commercial version.

PHP

Developed by the same company as IntelliJ IDEA is PhpStorm.

JavaScript

Visual Studio Code by Microsoft. Or the Atom editor as a more lightweight and community approach.