Parinfer is a plugin for Kakoune, Vim, Neovim and Emacs that infers parentheses and indentation. This library can be called from other editors that can load dynamic libraries.

GNU TeXmacs is a text editing platform which is specialized for scientists. It is ideal for editing structured documents with different types of content. It has robust support for mathematical formulas and plots. It can also act as an interface to external mathematical programs such as R and Octave. TeXmacs is completely extensible via Guile.

L3afpad is a GTK+ 3 text editor that emphasizes simplicity. As development focuses on keeping weight down to a minimum, only the most essential features are implemented in the editor. L3afpad is simple to use, is easily compiled, requires few libraries, and starts up quickly. L3afpad is a fork of Leafpad that uses GTK+ 3 instead of GTK+ 2.

Scintilla is a source code editing component for GTK+. It has the usual features found in text editing components, as well as some that are especially useful for editing and debugging source code; these include support for syntax styling, error indicators, code completion and call tips. Styling choices are more open than with many editors: Scintilla lets you use proportional fonts, bold and italics, multiple foreground and background colours, and multiple fonts.

Tecoc is a portable version of the venerable TECO written in C that strives to keep the original behavior.

A Kakoune / Neovim inspired editor, written in Rust.

Text Pieces is a tool for quick text transformations such as checksums, encoding, decoding, etc.

The basic features of Text Pieces are:

• Base64 encoding and decoding

• SHA-1, SHA-2 and MD5 checksums

• Prettify and minify JSON

• Covert JSON to YAML and vice versa

• Count lines, symbols and words

• Escape and unescape string, URL and HTML

• Remove leading and trailing whitespaces

• Sort and reverse sort lines

• Reverse lines and whole text

• You can write your own scripts and create custom tools

micro is a terminal-based text editor that aims to be easy to use and intuitive, while also taking advantage of the capabilities of modern terminals.

Lexilla is a library of language lexers that can be used with the Scintilla editing component.

Jed is a powerful programmer's editor using the S-Lang scripting language for configuration and extensibility. It provides emulation modes for the key bindings of many editors (including Emacs and WordStar), and has syntax highlighting for dozens of languages. Jed is very small and fast.

e3 is a micro text editor with an executable code size between 3800 and 35000 bytes. Except for ``syntax highlighting'', the e3 binary supports all of the basic functions one expects plus built in arithmetic calculations. UTF-8 coding of unicode characters is supported as well. e3 can use Wordstar-, EMACS-, Pico, Nedit or vi-like key bindings. e3 can be used on 16, 32, and 64-bit CPUs.

mle is a small, flexible, terminal-based text editor written in C. Notable features include: full Unicode support, syntax highlighting, scriptable rc file, macros, search and replace (PCRE), window splitting, multiple cursors, and integration with various shell commands.

GNU TeXmacs is a text editing platform which is specialized for scientists. It is ideal for editing structured documents with different types of content. It has robust support for mathematical formulas and plots. It can also act as an interface to external mathematical programs such as R and Octave. TeXmacs is completely extensible via Guile.

QEmacs (for Quick Emacs) is a very small but powerful editor. It has features that even big editors lack:

• Full screen editor with an Emacs look and feel with all Emacs common features: multi-buffer, multi-window, command mode, universal argument, keyboard macros, config file with C-like syntax, minibuffer with completion and history.

• Can edit files of hundreds of Megabytes without being slow by using a highly optimized internal representation and by mmaping the file.

• Full Unicode support, including multi charset handling (8859-x, UTF8, SJIS, EUC-JP, ...) and bidirectional editing respecting the Unicode bidi algorithm. Arabic and Indic scripts handling (in progress).

• WYSIWYG HTML/XML/CSS2 mode graphical editing. Also supports Lynx like rendering on VT100 terminals.

• WYSIWYG DocBook mode based on XML/CSS2 renderer.

• C mode: coloring with immediate update. Emacs like auto-indent.

• Shell mode: colorized VT100 emulation so that your shell work exactly as you expect. Compile mode with next/prev error.

• Input methods for most languages, including Chinese (input methods come from the Yudit editor).

• Hexadecimal editing mode with insertion and block commands. Unicode hexa editing is also supported.

• Works on any VT100 terminals without termcap. UTF8 VT100 support included with double width glyphs.

• X11 support. Support multiple proportional fonts at the same time (as XEmacs). X Input methods supported. Xft extension supported for anti aliased font display.

• Small! Full version (including HTML/XML/CSS2/DocBook rendering and all charsets): 200KB big. Basic version (without bidir/unicode scripts/input/X11/C/Shell/HTML/Dired): 49KB.

GNU nano is a small and simple text editor for use in a terminal. Besides basic editing, it supports: undo/redo, syntax highlighting, spell checking, justifying, auto-indentation, bracket matching, interactive search-and-replace (with regular expressions), and the editing of multiple files.

Vis aims to be a modern, legacy free, simple yet efficient vim-like text editor. It extends vim's modal editing with built-in support for multiple cursors/selections and combines it with sam's structural regular expression based command language.

Geany is a small and fast Integrated Development Environment (IDE) that only has a few dependencies on other packages and is as independent as possible from special desktop environments like KDE or GNOME.

The basic features of Geany are:

• syntax highlighting

• code completion

• auto completion of often constructed constructs like if, for and while

• auto completion of XML and HTML tags

• call tips

• folding

• many supported filetypes like C, Java, PHP, HTML, Python, Perl, Pascal

• symbol lists

• embedded terminal emulation

• extensibility through plugins

parinfer-rust-emacs is an Emacs-centric fork of parinfer-rust, itself an implementation of Shaun Lebron’s Parinfer. This builds a shared library intended to be loaded by the emacs-parinfer-rust-mode Emacs plugin, though a standalone binary is built also.

Kakoune is a code editor heavily inspired by Vim, as such most of its commands are similar to Vi's ones, and it shares Vi's "keystrokes as a text editing language" model. Kakoune has a strong focus on interactivity, most commands provide immediate and incremental results, while still being competitive (as in keystroke count) with Vim.

Fe is a small folding editor. It folds arbitrary text regions; it is not bound to syntactic units.

Fe has no configuration or extension language and requires no setup. Its user interface is emacs-like and it has menus for the very most important functions to help beginners. Further there is a reference card. It offers:

• Regions and Emacs-like kill ring

• Incremental search

• Keyboard macros

• Editing binary files

• Multiple windows and views

• Compose function for Latin 1 characters

Mogan is a scientific structural text editor, a fork of GNU TeXmacs.

EditorConfig makes it easy to maintain the correct coding style when switching between different text editors and between different projects. The EditorConfig project maintains a file format and plugins for various text editors which allow this file format to be read and used by those editors.

kak-lsp is a Language Server Protocol client for Kakoune implemented in Rust.

FeatherPad is a lightweight, Qt-based text editor, offering features like syntax highlighting, tabbed interface, and customizable settings.