Open source text editor from GitHub is “hackable to the core.” Supports themes for customized look and feel, plus modules can be added for various types of development work. Designed to be easy to learn.
Text editor features syntax colouring for 26 languages, powerful find and replace including regular expressions, outline menu, split views, macros and keybindings.
Distraction-free editor allows you to place markers in your text, which show up in a side panel. Comes with an inline thesaurus.
Open source markdown editor for OS X, released under the MIT license, heavily influenced by Chen Luo’s Mou. Features highly customisable markdown rendering, syntax highlighting in fenced code blocks, sophisticated auto-completion.
Mini Diary helps you make sense of all those thoughts churning in your mind every day. It doesn’t have a lot of features but it covers the basics: search, calendar, bold, italic, lists and word count. Plus it is password protected. Jump in and spill.
A light-weight text editor that supports syntax highlighting for dozens of programming languages. Choose from several themes and mono-spaced fonts.
General-purpose text editor supports extensive encoding, multi-selection indentation, invisible characters and iCloud Drive integration.
Collaborative coding for programmers has powerful editing tools, command line access and ability to create scripts. Now free and open source.
Sophisticated text editor for code, markup and prose has a slick user interface and features goto anything, multiple selections, a command palette, distraction-free mode, split editing and instant project switch. A licence is required for continued use, but there is no time limit for evaluation.
Bare Bones has turned TextWrangler into a free version of BBEdit. So basically, it’s BBEdit with a bunch of greyed out menu items that you can’t use unless you upgrade to the full version. Does this count as free? It’s borderline.
Visual Studio Code
Open source, cross-platfrm text editor from Microsoft has thousands of extensions, IntelliSense completions and built-in support for Git.