Open Source Lisp Text Editors

Lem is the editor/IDE well-tuned for Common Lisp. After installing lem, you can start developing in Common Lisp at once. You can skip over writing tidy settings or installing many plugins as you do on Emacs. Lem loads when starting up. Electron version is in the experimental stage.

Collection of Emacs Development Environment Tools

doxymacs aims to make creating/using Doxygen-created documentation easier for the {X}Emacs user.

Mailcrypt is an Emacs Lisp package which provides a simple interface to public key cryptography with PGP [and now GnuPG!]. Mailcrypt makes strong cryptography a fully integrated part of your normal mail and news handling environment

When you start Emacs, package Session restores various variables (e.g., input histories) from your last session. It also provides a menu containing recently changed/visited files and restores the places (e.g., point) of such a file when you revisit i

Navigator for 2ch(navi2ch) is a '2ch bbs' browser worked on Emacsen.

An Emacs mode for SGML and XML.

python-mode is an Emacs and XEmacs major mode for editing Python source code. Please note that ALL DEVELOPMENT HAS MOVED TO LAUNCHPAD: http://launchpad.net/python-mode

ECB is a file/code browser for Emacs. It can be used to browse any type of file and supports parsing of Java, C, C++, Elisp and some other code like perl, TeX, LaTeX. All browsing windows are within one frame and they are deletion-protected (eg by C-x 1)

xindy is an index processor that can be used to generate book-like indexes for arbitrary document-preparation systems. This includes systems such as TeX and LaTeX, the roff-family, and SGML/XML-based systems (e.g., HTML).

xslide is an Emacs major mode for editing XSL stylesheets and running XSL processors. Now on GitHub at https://github.com/tkg/xslide

ArmedBear (ABCL) is a Common Lisp written in Java. Its compiler produces JVM byte code, tapping into the 'write once, run everywhere' philosophy of Java. J is a text editor written in Java featuring e.g. syntax highlighting and automatic indenting.

The Emacs package ANTLR-Mode provides: syntax highlighting for ANTLR grammar files, automatic indentation, menus containing rule/token definitions and supported options and various other things like running ANTLR from within Emacs.

We have moved to http://sv.gnu.org/projects/erc. ERC is a powerful, modular, and extensible IRC client for Emacs and XEmacs. Full documentation can be found on the wiki by following the "Home Page" link.

An Emacs major mode for editing PHP code. Features: Syntax coloring and indenting; Documentation browse and search functions; Support for Imenu and SpeedBar; Customization options; and support for language features from PHP 5.4 and beyond. The latest release can be found at https://github.com/ejmr/php-mode and all bug reports should go there..

This elisp package provides text based table creation and editing feature. Emacs can edit tables embedded inside a document, just like a modern WYSIWYG word processor. The latest version generates a table HTML source from a WYSIWYG table.

When you create a new file with Emacs, package Template supplies an initial buffer content via a template: a file with normal text and expansion forms. There is a menu to easily create such templates. You can also use new commands to decorate comments.

(X)Emacs minor mode for XSLT processing and debugging.

led is a simple and easy-to-use but yet powerful line-oriented text editor. It is written in Urn Lisp and compiled to Lua, so it is available for every platform where Lua (version 5.1 or higher) is available as well; however some special features are available only with Lua 5.1 (or LuaJIT) on AmigaOS, MorphOS, AROS and UNIX with XTerm. The latest release (18-Mar-2021) now supports also scripts.

Emacs Xbase mode for editing (clipper, dbase, foxpro).

Alpaca is a programmable rich-text editor for authors using Mac OS X. It is built on, and programmable in, Common Lisp, and has a complete Common Lisp programming environment built into it.

The book index generator generate the back-of-book index for Thai book automatically.

This is a bidirectional braille translator program written in Common Lisp. Japanese and English is almost completed; other languages are experimental statuses so far. I'm ready to translate Japanese in source code into English according to its worth.

The Breadcrumb package is an Emacs add-on module that allows setting a series of quick bookmarks in Emacs. The bookmarks are global across different editing buffers, leaving a trail of breadcrumbs across them that you can jump back to quickly.

CSharp (C#) Development Environment for XEmacs / GNU Emacs