CNC Syntax Editor Free Edition 

CNC Syntax Editor is a popular tool for writing, editing, and studying CNC programs with G codes. It has a comfortable and intuitive interface both for beginners and advanced programmers.

Main Features:

- CNC intelligent editing with undo and redo.

- Syntax highlighting.

- Default and customizable color schemes.

- Visual splitting code groups.

- Simple, menu-driven step by step set-up.

- Save settings to Windows registry.

- Multiply editing windows at once.

- Ability of deleting empty lines.

- Ability of deleting comments.