This program is an Aqua-native build of the powerful Emacs text editor. Aquamacs will feel and behave mostly like an Aqua program while still being a real GNU Emacs with all the ergonomy and extensibility you've come to expect from this world-class editor. Aquamacs support the standard Mac user interface that you've come to love. For instance, in addition to traditional Emacs shortcuts like C-x C-f (open a new file), Aquamacs understands Command-O. The program behaves like a modern application on Mac when it comes to selecting, copying, pasting texts within Aquamacs or in between applications.
Extensible, customizable text editor—and more.
Latexian is a handy LaTeX editor application for the Mac.
The LaTeX Equation Editor provides an elegant graphical interface to LaTeX.
Your Swiss Army Knife to edit any kind of text based files.
Carbon/OS X distribution of GNU Emacs