Emacs
Macintosh, MicroEmacs, Microsoft Windows, XEmacs, Design of the Emacs Logo, EMacro, Emacs Beginner's HowTo, Emacs for Vi users, Emacs Implementations and Literature, Emacs Keybinding Guide, Emacs on OS/2 Help, Emacs Voice Commander, EMACS: The Extensible, Customizable Display Editor, Emacs: The Sacred Editor
AEditor
A programmer's editor, written entirely in Ruby and thus easy to extend with Ruby customizations. Summary of the features, developers weblog, information about the development and download and installation instructions.
Anyedit
A development environment and Editor with a wide range of functionalities. Written entirely in C++.
Bluefish
A programmer's HTML editor written using GTK, designed to save the experienced webmaster some keystrokes. (C) [GNU/Linux, Unix]
BVI - Binary Visual editor
The bvi editor is a display-oriented editor for binary files, based on the vi text editor.
Code Browser
A folding text editor that allows to structure source code using folders. [Win32/Linux]
Cssed
CSS editor featuring auto completion, syntax highlighting and syntax validation. (C, C++) [Linux]
Ed!'s home on the web
Ed! is a free open source text editor for the Linux platform. The source code is available for download. The site also provides some information on how to develop an editor in the Linux console environment using the ncurses library.
GNU Nano
Clone of the Pico text editor with some enhancements. Available for Linux and DOS.
GNU TeXmacs
Editor for extensible, structured and WYSIWYG technical documents, which was both inspired by TeX and GNU Emacs. The site provides documentation, source and binary packages, a feedback section and additional links.
Helene
A webbased syntax highlighting text editor (Javascript) [OS Independent].
HexEdit
A Macintosh hexadecimal file editor that handles both data and resource forks.
J
A multifile, multiwindow customizable editor featuring syntax highlighting and enhancements for Java, C, C++, XML, HTML, JavaScript, Lisp, and Perl, with FTP and HTTP support written in Java.
Jed modes and scripts
Some scripts for customising and enhancing the JED editor using the SLang scripting capabilities.
LDE - The Linux Disk Editor
Disk editor for Linux, originally written to help recover deleted files. It has a simple ncurses interface that resembles an old version of Norton Disk Edit for DOS.
NE, the Nice Editor
An editor with a small footprint, featuring extended regular expression search and replace a la emacs and vi and editing of binary files.
NEdit
GUI-style plain-text editor for X-Windows systems. Features include syntax highlighting and C-style macro language.
Nedit Macros
A large collection of macros for use with the NEdit text editor.
NEdit Support Page
Package to port NEdit on Windows and a package of NEdit macros to edit LaTeX files.
Peacock
HTML Editor for GTK+/GNOME. It supports most of basic HTML. It features session management and preview using the GtkHTML widget.
poEdit
A cross-platform gettext catalogs (.po files) editor. It aims to provide more convenient approach to editing catalogs than launching vi and editing the file by hand.
Programmers Notepad
Windows programming editor with an integrated Hex viewer/editor.
Quanta Plus
An HTML editor and a web development for the K Desktop Environment.
REd0
A text editor written in TCL/Tk, meant to be platform-independend while still using the host systems available features.
Scintilla and SciTE
Download, screenshots and documentation of a free source code editing component for Win32 and GTK and an editor based on this component.
SETEDIT
Text mode editor to supersede Borlands BC++ editor with a number of enhancements. Available for DOS and Linux.
Shed
Easy to use hex editor written for Unix/Linux using ncurses, with a friendly pico-style interface.
The Hessling Editor (THE)
Editor based on the VM/CMS editor XEDIT, using REXX as its macro language. Available for UNIX (including Linux) as text and X11 variants, OS/2, Windows, BeOS, QNX and Amiga.
The JED Editor Page
Text editor for Unix, VMS, MSDOS, OS/2, BeOS, QNX, and Win9X/NT platforms. A macro language and modes for different editing tasks are available.
Tinn
A free text editor that trys to address some of Notepad's limitations without getting too big. It is written in Delphi 5 using the TSynEdit components.
Tkoutline
A cross-platform outline editor written in Tcl/Tk.
Vigor
Has all the features of traditional Unix vi, plus the friendly and helpful Vigor paperclip assistant.
Xcoral
A text editor for X-window (UNIX only) , with a built-in C/C++/Java code browser and a C interpreter. Beside a screenshots and a features sections there is a download area and a page with instructions to build from the source.
Zile is Lossy Emacs
An Emacs clone useful for small footprint installations (like on floppy disk) or quick editing sessions. Available are a description of the features, information about how to get Zile, links to the documentation and screenshots.