Tkoutline
- A cross-platform outline editor written in Tcl/Tk.
- http://tkoutline.sourceforge.net/

Quanta Plus
- An HTML editor and a web development for the K Desktop Environment.
- http://quanta.kdewebdev.org

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.
- http://www.poedit.net/

gEdit
- Lightweight but powerful text editor of the GNOME project.
- http://www.gnome.org/projects/gedit/

Smultron
- Editor for Mac OS X with support for syntax colouring, text encodings, code snippets, HTML preview and multi-document find and replace with regular expressions. The site provides a description of the features, a FAQ and an introduction into syntax-based c
- http://smultron.sourceforge.net/

Ed!
- 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.
- http://writeka.com/ed

TEA for Linux
- A Linux text editor (based on the GTK+ library) with functions and features for HTML and LaTeX authoring. The site offers downloads, and a history of the editor.
- http://tea.linux.kiev.ua

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.
- http://aeditor.rubyforge.org/

Helene
- A webbased syntax highlighting text editor (Javascript) [OS Independent].
- http://helene.muze.nl/

Code Browser
- A folding text editor that allows to structure source code using folders. [Win32/Linux]
- http://code-browser.sourceforge.net/

Cssed
- CSS editor featuring auto completion, syntax highlighting and syntax validation. (C, C++) [Linux]
- http://cssed.sourceforge.net

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.
- http://www.jedsoft.org/jed/

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.
- http://hessling-editor.sourceforge.net/

NEdit Support Page
- Package to port NEdit on Windows and a package of NEdit macros to edit LaTeX files.
- http://nedit.gmxhome.de/

Vim online
- Resources, tips and news for the Vim community.
- http://vim.sourceforge.net/

Vigor
- Has all the features of traditional Unix vi, plus the friendly and helpful Vigor paperclip assistant.
- http://vigor.sourceforge.net/

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.
- http://tinn.sourceforge.net/

Shed
- Easy to use hex editor written for Unix/Linux using ncurses, with a friendly pico-style interface.
- http://shed.sourceforge.net/

REd0
- A text editor written in TCL/Tk, meant to be platform-independend while still using the host systems available features.
- http://red0.sourceforge.net/

Programmers Notepad
- Windows programming editor with an integrated Hex viewer/editor.
- http://www.pnotepad.org/

Peacock
- HTML Editor for GTK+/GNOME. It supports most of basic HTML. It features session management and preview using the GtkHTML widget.
- http://peacock.sourceforge.net/

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.
- http://lde.sourceforge.net/

Katy
- A text editor for KDE inspired by the popular Editor UltraEdit.
- http://katy.sourceforge.net/

jVi
- jVi is a small subset of vim which is pluggable into JBuilder.
- http://jvi.sourceforge.net/

HexEdit
- A Macintosh hexadecimal file editor that handles both data and resource forks.
- http://hexedit.sourceforge.net/

Gnotepad+
- An HTML/text editor using GTK+ and/or GNOME.
- http://gnotepad.sourceforge.net/

FTE Text Editor
- A folding text editor for programmers.
- http://fte.sourceforge.net/

Freddy
- An ascii text editor, primarily for programmers.
- http://freddy.sourceforge.net/

Eddi
- Tcl and tix based editor.
- http://eddi.sourceforge.net/

Bluefish
- A programmer's HTML editor written using GTK, designed to save the experienced webmaster some keystrokes. (C) [GNU/Linux, Unix]
- http://bluefish.openoffice.nl/

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.
- http://www.texmacs.org/

BVI - Binary Visual editor
- The bvi editor is a display-oriented editor for binary files, based on the vi text editor.
- http://bvi.sourceforge.net/

Jed modes and scripts
- Some scripts for customising and enhancing the JED editor using the SLang scripting capabilities.
- http://www.paneura.com/~dino/

SETEDIT
- Text mode editor to supersede Borlands BC++ editor with a number of enhancements. Available for DOS and Linux.
- http://setedit.sourceforge.net/

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.
- http://zile.sourceforge.net/

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.
- http://armedbear.org/

ZED
- Small editor with features for programmers.
- http://zed.c3po.it/

Nedit Macros
- A large collection of macros for use with the NEdit text editor.
- http://www.mailnet.co.uk/~marc/msl.html

GNU Nano
- Clone of the Pico text editor with some enhancements. Available for Linux and DOS.
- http://www.nano-editor.org/

NEdit
- GUI-style plain-text editor for X-Windows systems. Features include syntax highlighting and C-style macro language.
- http://www.nedit.org/

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.
- http://www.scintilla.org/

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.
- http://ne.dsi.unimi.it/