Several common editors can be customised for Grace:

• vim — vim-grace Vim configuration for the Grace programming language
• GNU Emacs — grace-mode major mode for Emacs
• TextMate — grace-tmbundle TextMate Bundle – will also work with Sublime (and is in the Sublime package manager)
• GNU Emacs — grace-generic-mode.el is an old major mode for editing Grace, based on generic-mode.el