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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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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Skewer
Live web development in Emacs
Skewer Mode is an Emacs package for interacting with live JavaScript, CSS, and HTML running inside a web browser. Developers can send expressions or complete buffers from Emacs and evaluate them immediately on an attached page. JavaScript results appear in the minibuffer or a dedicated REPL, while CSS rules and HTML elements can be updated without reloading the document. Multiple browser windows or tabs may connect simultaneously and receive the same submitted code. The package includes an Emacs-hosted HTTP service, CORS support, and a userscript for attaching Skewer to arbitrary pages. It is written entirely in Emacs Lisp and is distributed through MELPA with its required dependencies. The project supports major desktop browsers and uses key bindings modeled after Emacs Lisp development modes. -
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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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org-ql
An Org-mode query language, including search commands and saved views
This package provides a query language for Org files. It offers two syntax styles: Lisp-like sexps and search engine-like keywords. It includes three libraries: The org-ql library is flexible and may be used as a backend for other tools. The libraries org-ql-search and helm-org-ql (a separate package) provide interactive search commands and saved views. The package org-ql may be installed directly from MELPA or with other tools like Quelpa. After installation, you can use the commands without additional configuration. To use the functions and macros in your own Elisp code, use libraries org-ql and org-ql-view. Feedback on these APIs is welcome. Eventually, after being tested and polished, they will be considered stable. When formatting entries for Org QL View buffers, use internal function for retrieving heading tags. This improves speed by using our cache, and it removes the need for a compatibility alias for Org versions before 9.3. -
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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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Clojure Mode
Emacs support for the Clojure(Script) programming language
clojure-mode is an Emacs major mode that provides font-lock (syntax highlighting), indentation, navigation and refactoring support for the Clojure(Script) programming language. MELPA Stable is the recommended repo as it has the latest stable version. MELPA has a development snapshot for users who don't mind (infrequent) breakage but don't want to run from a git checkout. Available on the major package.el community maintained repos, MELPA Stable and MELPA repos. All the major modes derive from clojure-mode and provide more or less the same functionality. Differences can be found mostly in the font-locking - e.g. ClojureScript has some built-in constructs that are not present in Clojure. The proper major mode is selected automatically based on the extension of the file you're editing. Having separate major modes gives you the flexibility to attach different hooks to them and to alter their behavior individually (e.g. add extra font-locking just to clojurescript-mode) . -
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Counsel Projectile
Ivy UI for Projectile
counsel-projectile is an Emacs package that combines Projectile and Ivy/Counsel to provide fast project navigation and fuzzy searching. It enhances productivity by letting users switch between files, buffers, and commands in their projects with minimal keystrokes. Ideal for Emacs users working on multi-file codebases. -
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ELisp Tree-sitter
Tree-sitter bindings for Emacs Lisp
tree-sitter is an Emacs binding for Tree-sitter, an incremental parsing system. It aims to be the foundation for a new breed of Emacs packages that understand code structurally. Faster, fine-grained code highlighting. More flexible code folding. Structural editing (like Paredit, or even better) for non-Lisp code. More informative indexing for imenu. The author of Tree-sitter articulated its merits a lot better in this Strange Loop talk. The minor mode tree-sitter-mode provides a buffer-local syntax tree, which is kept up-to-date with changes to the buffer’s text. Run M-x tree-sitter-hl-mode to replace the regex-based highlighting provided by font-lock-mode with tree-based syntax highlighting. -
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Elfeed Emacs Web Feed Reader
An Emacs web feeds client
Elfeed is an extensible web feed reader for Emacs, supporting both Atom and RSS. It requires Emacs 24.3 and is available for download from MELPA or el-get. -
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Emacs Markdown Mode
Emacs Markdown Mode
markdown-mode is a major mode for editing Markdown-formatted text. The latest stable version is markdown-mode 2.5, released on Feb 12, 2022. See the release notes for details. markdown-mode is free software, licensed under the GNU GPL, version 3 or later. The primary documentation for Markdown Mode is available below, and is generated from comments in the source code. For a more in-depth treatment, the Guide to Markdown Mode for Emacs covers Markdown syntax, advanced movement and editing in Emacs, extensions, configuration examples, tips and tricks, and a survey of other packages that work with Markdown Mode. Finally, Emacs is also a self-documenting editor. This means that the source code itself contains additional documentation: each function has its own docstring available via C-h f (describe-function), individual keybindings can be investigated with C-h k (describe-key), and a complete list of keybindings is available using C-h m (describe-mode). -
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Evil Collection
A set of keybindings for evil-mode
This is a collection of Evil bindings for the parts of Emacs that Evil does not cover properly by default, such as help-mode, M-x calendar, Eshell and more. Reduce context switching: As soon as “moving around” gets hardwired to <hjkl>, it becomes frustratingly inefficient not to have it everywhere. Community work: setting up bindings is tremendous work and joining force can only save hours for all of Evil users out there. While not everyone may agree on the chosen bindings, it helps to have something to start with rather than nothing at all. In the end, users are free to override a subset of the proposed bindings to best fit their needs. Having all bindings defined in one place allows for enforcing consistency across special modes and coordinating the community work to define a reference implementation. -
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Quelpa
Build and install your Emacs Lisp packages on-the-fly
Quelpa is a package manager for Emacs that allows users to build and install Emacs Lisp packages directly from source. It supports fetching packages from various sources, including Git repositories, and integrates with Emacs' package management system. Quelpa enables users to access the latest versions of packages and is particularly useful for those who prefer to work with cutting-edge software. -
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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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rjsx-mode
A JSX major mode for Emacs
rjsx-mode is an Emacs major mode derived from js2-mode, tailored for editing JSX files. It extends the parser to support full JSX syntax, providing features like syntax highlighting, indentation, and error checking for React development. -
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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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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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Language Server Protocol for Emacs
Emacs client/library for the language server protocol
Client for Language Server Protocol (v3.14). lsp-mode aims to provide IDE-like experience by providing optional integration with the most popular Emacs packages like company, flycheck and projectile. Works out of the box and automatically upgrades if additional packages are present. Choose between full-blown IDE with flashy UI or minimal distraction-free. Supports all features in Language Server Protocol v3.14. Semantic tokens as defined by LSP 3.16 (compatible language servers include recent development builds of clangd and rust-analyzer). If LSP server supports completion, lsp-mode use symbols returned by the server to present the user when completion is triggered via completion-at-point. For UI feedback of the available code actions, you can enable lsp-modeline-code-actions-mode which shows available code actions on modeline. -
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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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dumb-jump
an Emacs "jump to definition" package for 50+ languages
Dumb Jump is an Emacs "jump to definition" package with support for 50+ programming languages that favors "just working". This means minimal -- and ideally zero-configuration with absolutely no stored indexes (TAGS) or persistent background processes. Dumb Jump requires at least GNU Emacs 24.3. Dumb Jump uses The Silver Searcher ag, ripgrep rg, or grep to find potential definitions of a function or variable under point. It uses a set of regular expressions based on the file extension, or major-mode, of the current buffer. The matches are run through a shared set of heuristic methods to find the best candidate to jump to. If it can't decide it will present the user with a list in a pop-menu, helm, or ivy (see dumb-jump-selector). For the currently supported languages it seems to do a good job of finding what you want. If you find a case where it does not work as expected do not hesitate to open an issue. It can be slow if it needs to use grep and/or a project is large. -
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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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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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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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