A source code editor is a text editor program designed specifically for editing source code of computer programs by programmers. It may be a standalone application or it may be built into an integrated development environment (IDE).

Source code editors have features specifically designed to simplify and speed up input of source code, such as syntax highlighting, autocomplete and bracket matching functionality. These editors also provide a convenient way to run a compiler, interpreter, debugger, or other program relevant for software development process. So, while many text editors can be used to edit source code, if they don't enhance, automate or ease the editing of code, they are not "source code editors," but simply "text editors that can also be used to edit source code."