Open Source Emacs-Lisp Software
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Emacs-Lisp Software
Browse free open source Emacs-Lisp Software and projects below. Use the toggles on the left to filter open source Emacs-Lisp Software by OS, license, language, programming language, and project status.
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zenburn-theme for Emacs
The Zenburn colour theme ported to Emacs
Zenburn for Emacs is a direct port of the popular Zenburn theme for vim, developed by Jani Nurminen. It's my personal belief (and that of its many users I presume) that it's one of the best low-contrast color themes out there and that it is exceptionally easy on the eyes. This theme uses the "new" (it used to be new several years ago when I created this package) built-in theming support available starting with Emacs 24.1. You can support the development of Zenburn for Emacs via GitHub Sponsors, ko-fi, PayPal and Patreon. Zenburn for Emacs is already bundled into Emacs Prelude. If you're a Prelude user - you're probably already using Zenburn, since it's Prelude's default color theme. You can load Zenburn at any time by M-x load-theme zenburn. If you'd like to tweak the theme by changing just a few colors, you can do so by defining new values in the zenburn-override-colors-alist variable before loading the theme. -
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emacs-w64
64-Bit GNU Emacs for MS Windows with optimization.
A GNU Emacs binary distribution for users who want to use Emacs natively in 64-Bit Windows (x86_64). This project will focus on providing unmodified, up-to-date (from git master and newest release), and optimized w64 binary builds. Also available on GitHub: https://github.com/zklhp/emacs-w64/releases For details concerning the build, please see the wiki page on https://sourceforge.net/p/emacsbinw64/wiki/Build%20guideline%20for%20MSYS2-MinGW-w64%20system/. 中文版请看这里： http://chriszheng.science/2015/03/19/Chinese-version-of-Emacs-building-guideline/. -
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Mozc
Mozc - a Japanese Input Method Editor designed for multi-platform
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. -
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CIDER
The Clojure Interactive Development Environment that Rocks for Emacs
CIDER extends Emacs with support for interactive programming in Clojure. The features are centered around cider-mode, an Emacs minor-mode that complements clojure-mode. While clojure-mode supports editing Clojure source files, cider-mode adds support for interacting with a running Clojure process for compilation, debugging, definition and documentation lookup, running tests, and so on. CIDER aims to provide an interactive development experience similar to the one you’d get when programming in Emacs Lisp, Common Lisp (with SLIME or Sly), Scheme (with Geiser), and Smalltalk. Programmers are expected to program in a very dynamic and incremental manner, constantly re-evaluating existing Clojure definitions and adding new ones to their running applications. You never stop/start a Clojure application while using CIDER - you’re constantly interacting with it and changing it. -
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GNU Emacs / N Λ N O
Emacs made simple
GNU Emacs / N Λ N O is a lightweight, minimalistic Emacs-inspired text editor configuration (or “distribution”) created by Nicolas P. Rougier that aims to provide a simpler and more streamlined experience compared to full-blown Emacs setups. It retains essential editing capabilities while stripping down much of the complexity and heavyweight features that can make traditional Emacs intimidating to newcomers. The project includes only minimal configuration and essential extensions, enabling users to start editing text comfortably without wrestling with a steep learning curve or bloated init files. This makes it appealing for users who like the power of Emacs (or similar advanced editors) but want a fast, responsive, and easy-to-maintain editor. Nano-Emacs can be especially useful for scripting, quick edits, data-analysis workflows, or writing in scientific/research contexts, especially when you want something more powerful than a simple text editor but lighter than a full IDE. -
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Projectile
Project Interaction Library for Emacs
Projectile is a project interaction library for Emacs. Its goal is to provide a nice set of features operating on a project level without introducing external dependencies (when feasible). For instance - finding project files has a portable implementation written in pure Emacs Lisp without the use of GNU find (but for performance sake an indexing mechanism backed by external commands exists as well). This library provides easy project management and navigation. The concept of a project is pretty basic - just a folder containing some special file (e.g. a VCS marker or a project descriptor file like pom.xml or Gemfile). Projectile will auto-detect pretty much every popular project type out of the box and you can easily extend it with additional project types. Projectile tries to be practical - portability is great, but if some external tools could speed up some task substantially and the tools are available, Projectile will leverage them. -
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Solarized for Emacs
The Solarized colour theme, ported to Emacs
Solarized for Emacs is an Emacs 24bit theme making use of of the Solarized palette, developed by Ethan Schoonover. Solarized for Emacs supports officially Emacs 24+, but should be working under Emacs 23 as well. The theme is implemented in terms of customizations and def theme and does not require the color-theme-package. Solarized for Emacs is available for installation via the MELPA using package.el. This package will install two variants of the theme; solarized-light-theme and solarized-dark-theme. You can load one of the theme variants with M-x load-theme. The intent of this theme will always be that Solarized-dark/light will give you the best possible experience. Palettes other than Solarized will never have influence over theming decisions, they are complementary. You should not expect the complementary themes to be fully accurate or the most suitable versions of how to apply those palettes into an emacs theme. -
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telega.el
GNU Emacs telegram client (unofficial)
telega is a full-featured unofficial client for Telegram platform for GNU Emacs. telega is actively developed, for this reason, some features are not implemented, or they are present just as skeletons for future implementation. However, the core parts are mature enough so that it is possible to use telega on daily basis. telega depends on the visual-fill-column and rainbow-identifiers packages. This dependency automatically installs if you install telega from MELPA or GNU Guix. Otherwise, will you need to install these packages by hand? telega is built on top of the official library provided by Telegram TDLib. Most distributions do not provide this package in their repositories, in which case you will have to install it manually by following the instructions. GNU Guix, however, does have both telega and TDLib packaged. If you use GNU Guix you can skip directly to Installing from GNU Guix. -
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Blamer.el
A git blame plugin for emacs inspired by VS Code's GitLens plugin
A git blame plugin for emacs inspired by VS Code’s GitLens plugin and Vim plugin. -
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Flycheck
On the fly syntax checking for GNU Emacs
Flycheck is a modern on-the-fly syntax-checking extension for GNU Emacs, intended as replacement for the older Flymake extension which is part of GNU Emacs. For a detailed comparison to Flymake see Flycheck versus Flymake. It uses various syntax checking and linting tools to automatically check the contents of buffers while you type, and reports warnings and errors directly in the buffer, or in an optional error list. Out of the box Flycheck supports over 40 different programming languages with more than 80 different syntax-checking tools, and comes with a simple interface to define new syntax checkers. Many 3rd party extensions provide new syntax checkers and other features like alternative error displays or mode line indicators. Flycheck needs GNU Emacs 24.3+, and works best on Unix systems. Windows users, please be aware that Flycheck does not support Windows officially, although it should mostly work fine on Windows. -
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Google Style Guides
Style guides for Google-originated open source projects
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. -
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SLIME
The Superior Lisp Interaction Mode for Emacs
SLIME is a Emacs mode for Common Lisp development. Inspired by existing systems such Emacs Lisp and ILISP, we are working to create an environment for hacking Common Lisp in. SLIME extends Emacs with support for interactive programming in Common Lisp. The features are centered around slime mode, an Emacs minor mode that complements the standard lisp mode. While lisp-mode supports editing Lisp source files, slime-mode adds support for interacting with a running Common Lisp process for compilation, debugging, documentation lookup, and so on. The Read-Eval-Print Loop ("top-level") is written in Emacs Lisp for tighter integration with Emacs. The REPL also has builtin "shortcut" commands similar to those of the McCLIM listener. SLIME is able to take compiler messages and annotate them directly into source buffers. -
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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.
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Fortran-tags
Emacs plugin for source code indexing of modern Fortran
NOTE: Development continued at GitHub! Current version is higher than 1.1.6. Fortran-tags is a lightweight Fortran source code indexing tool for Emacs. It is able to correctly locate all global and local variables and is expected to work with any Fortran 2008 conforming code with only minor exceptions. -
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RefDB is a reference database and bibliography tool for SGML, XML, and LaTeX documents, sort of a Reference Manager or BibTeX for markup languages. It is portable and known to run on Linux, Free/NetBSD, OSX, Solaris, and Windows/Cygwin.
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Aquamacs Emacs is a Mac-native distribution of the powerful Emacs text editor (versions 23+), featuring Plug&Play and a great UI. Aquamacs feels just right on the Mac, interacts well with other apps, while supporting Emacs' keys and Elisp packages.
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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.
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Takt
Text-based Music Programming Tools
Takt is a text-based language for describing note and chord sequences as well as algorithmic compositon rules with C-like syntax. This software package contains a REPL (read-eval-play loop) interpreter for Takt, a MIDI-file-to-Takt translator, and an Emacs interface program which enables note entry from a MIDI keyboard. -
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OmniMark mode
OmniMark major mode for Emacs/XEmacs
This is an Emacs/XEmacs major mode for editing OmniMark programs. It supports syntax highlighting, and uses heuristics to help with indentation. Additionally, programs can be navigated according to their structure. -
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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.
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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".
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Bone Yard is a simple method for inserting default, mode specific, text into empty Emacs buffers. It's used to easily load boilerplate text to get started with new programs.
