Open Source Emacs-Lisp Software for ChromeOS

Mozc is an open source Japanese Input Method Editor (IME) developed by Google, designed to provide Japanese text input across multiple operating systems including Android, macOS, Windows, GNU/Linux, and Chromium OS. The project originated as a subset of Google Japanese Input, released publicly under the BSD 3-Clause license for community use and development. Mozc offers core IME functionality such as text conversion, prediction, and dictionary-based input, enabling users to efficiently type and edit Japanese text. While Mozc shares much of its codebase with Google’s internal IME, it operates as an independent open source project without official support, guarantees, or stable release cycles. Developers can build Mozc from source for their preferred platform, and the repository includes detailed build instructions for Android, Linux, macOS, and Windows environments.

Tomorrow Theme is a family of carefully balanced color schemes designed to provide consistent, readable syntax highlighting across editors, terminals, and code-hosting sites. The palette comes in multiple variants—Tomorrow (light) and several “Tomorrow Night” options like Bright, Blue, and Eighties—so developers can choose a tone that matches their environment without losing legibility. Each scheme defines a small, harmonious set of base and accent colors that map predictably to tokens such as keywords, strings, numbers, and comments, reducing visual noise while preserving structure. The project ships ports for a wide range of tools (from Vim and Emacs to Sublime Text, iTerm, and more) and documents the palette so others can create faithful ports. Its emphasis on restraint and consistency makes it a popular baseline for teams that want code to look familiar across machines and applications.

DictEm is an extremely customizable Dictionary client for (X)Emacs. It implements functions of the client part of the Dictionary protocol (RFC-2229). It widely uses autocompletion and provides powerful API that allows to heavily extend its functionality.

MMM Mode is an add-on package for emacs that enables the user to edit different parts of a file in different major modes. It is well suited for editing embedded code and code-generating code. The development is hosted at GitHub now: https://github.com/purcell/mmm-mode Please report any issues there.

CC Mode is a GNU Emacs and XEmacs mode for editing C and other languages with similar syntax; currently C++, Objective-C, Java, CORBAs IDL, Pike, and AWK. It is a standard package in both GNU Emacs and XEmacs.

Emacs Lisp libraries for GNU Emacs or XEmacs.

This project has been moved to http://code.google.com/p/geben-on-emacs/

p4.el is an Emacs Lisp library providing Perforce CMS integration with GNU Emacs and XEmacs.

This is a robust client for the AOL Instant Messenging service using the Emacs text editor as it's UI. That's right -- you can use AIM from within emacs! TNT has been described as "IM for adults".

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.

ESense - Erlang "IntelliSense" for Emacs

Free Software/Open Source tabbed terminal through GNU Emacs for windows

Easymacs is an easy-to-learn, one-size-fits-all configuration for new users of GNU Emacs.

Emacs mode for the programming language Maude.

Emacs Photo Database provides functions to manage a collection of photographic films, negatives, and prints stored in a SQL database. It is targeted at fine-art photographers and other people who use a wet-process workflow instead of digital imaging.

Evide is short for "Emacs Verilog IDE". Evide is a cross-platform, intelligent, powerful and easy to use verilog developing evironment.

This is simply a repository for Emacs elisp code presented and discussed at http://www.emacswiki.org

GNU Hyperbole (pronounced Ga-new Hi-per-bo-lee), or just Hyperbole, is an amazing programmable hypertextual information management system implemented as a GNU Emacs package. This is the first public release in 2016. Hyperbole has been greatly expanded and modernized for use with the latest Emacs 25 releases; it supports GNU Emacs 24.4 or above. It contains an extensive set of improvements that can greatly boost your day-to-day productivity with Emacs and your ability to manage information stored across many different machines on the internet. People who get used to Hyperbole find it helps them so much that they prefer never to use Emacs without it. Hyperbole includes easy-to-use, powerful hypertextual button types and links that can be made without the need to learn a markup language. It also includes a hierarchical, record-based contact manager, a rapid window and frame control system and a powerful multi-level auto-numbered outliner.

Google Styleguide is a comprehensive collection of coding style guides created and maintained by Google to ensure consistency, readability, and maintainability across its vast array of software projects. These guides define best practices and conventions for writing code in multiple programming languages, from C++ and Python to JavaScript, Go, and Swift. By adhering to these standards, developers can more easily collaborate, review code, and maintain high-quality software across teams and open source contributions. Each guide covers a wide range of topics, including naming conventions, file organization, indentation, documentation, and usage of specific language features. The repository also provides supplementary resources such as an Emacs configuration file for Google’s C++ style and references to related guidelines like Effective Dart and Kotlin Style Guide.

Based on https://github.com/dgutov/robe for Emacs, insert possible missing 'require' lines in Ruby source files.

Javadoc-Help is an add-on module for Emacs that let you search a class through multiple online and local javadocs quickly, and view the found class documentation in the system web browser.

Log4j mode - a major mode for viewing log files in Emacs - including syntax highlighting, log file filtering, and source code browsing.

Emacs editing mode for X12 files and messages. Defines X12-specific font-locking and text navigation.

A Multi-Lingual Vocabulary system for GNUemacs, that helps you to learn words in other languages as you use them in your own language. Vocabulary is stored in CSV (spreadsheet) files for easy interchange.

NunniMJAX is a minimal java library for parsing XML. The API and functioning recall SAX and is sequential and event-driven. The parser strives to verify that the XML is well-formed, but no validation. NunniMJAX's FSM has been generated using NunniFSMGen