SubEthaEdit is a powerful and lean text editor. And it's the only collaborative one that is a joy to use. By combining the ease of Bonjour with the world's best text collaboration engine, it makes working together not only possible but even fun…

SubEthaEdit includes various advanced features: A UNIX command line utility to enable complex and interactive pipe workflows with your terminal. Overhauled printing, including all bells and whistles, even with collaborative metadata. Exporting to HTML, again with metadata. Completely user customizable syntax highlighting through styles. Support for editing files as administrator. Improved AppleScript support to allow control of sharing features.

Limitations: 30-day trial.

Requirements:
macOS 10.13+
Universal Binary