Aquamacs

Aquamacs is a text editor built on the GNU Emacs codebase and packaged specifically for macOS. It provides the full range of Emacs editing capabilities while integrating with the macOS environment, offering a familiar look and feel for Mac users. The editor supports a wide variety of file types, including plain text, HTML, LaTeX, and source code in languages such as C++, Java, Python, R, Perl, Ruby, and PHP.

Targeted at developers and writers who prefer Emacs but work primarily on macOS, Aquamacs delivers the extensibility of Emacs with mac for‑specific adjustments. It runs on macOS 10.11 (El Capitan) and later, and is distributed as a stable release. The project emphasizes a modern user experience while retaining the powerful editing features and customizability that Emacs users expect.