Racket mode provides thorough font-lock and indentation. It follows DrRacket concepts where applicable.

This package adds support to Emacs for editing text with multiple simultaneous cursors.

This package provides a minor mode for Haskell development that supports type hints, definition-jumping, completion, and more.

This package provides a major mode for viewing certificates, CRLs, and other PKI-related files. It uses OpenSSL for viewing PEM and DER encoded PKI entities.

This package provides a minor mode to automatically warp the mouse pointer to the center of a focused window, as well as a command to warp it to the currently selected window.

Starlit theme customizes your Emacs to be deep blue with bright colors from a starlit sky.

Auto-Complete is an intelligent auto-completion extension for Emacs. It extends the standard Emacs completion interface and provides an environment that allows users to concentrate more on their own work. Its features are: a visual interface, reduce overhead of completion by using statistic method, extensibility.

This package adds Clojure syntax checker clj-kondo.

This package provides an ESS-like binding to send lines or regions to a REPL from Hy buffers.

This package adds support for the Gauche Scheme implementation to Geiser, a generic Scheme interaction mode for the GNU Emacs editor.

Free-keys shows available key bindings in the current Emacs buffer.

Emacs major mode for jinja2 with: syntax highlighting, sgml/html integration, and indentation (working with sgml).

enh-ruby-mode is a major mode providing syntax highlighting, navigation and indentation capabilities for editing Ruby source files. It parses the source files using Ruby's builtin Ripper class and performs syntax checks on them.

This package provides a minor mode to emulate the behavior of a Caps Lock key.

EBDB-i18n-Chn makes EBDB nicer to use with China-based contacts, both for handling Chinese characters, and for formatting of phones and addresses. Be aware that using this library will incur a non-neglible slowdown at load time. It shouldn't have any real impact on search and completion times.

Packed provides some package manager agnostic utilities to work with Emacs Lisp packages. As far as Packed is concerned packages are collections of Emacs Lisp libraries that are stored in a dedicated directory such as a Git repository. And libraries are Emacs Lisp files that provide the correct feature (matching the filename).

Where a package manager might depend on metadata, Packed instead uses some heuristics to get the same information---that is slower and might also fail at times but makes it unnecessary to maintain package recipes.

This package provides a global minor mode that enhances the Emacs built-in project.el library to support keeping projects isolated in named tab groups. This package automates the steps you’d otherwise need to do manually if you wanted to keep the buffers of a project neatly isolated in separate, named tab groups.

This package creates Graphviz directed graphs from Org files.

This package defines a global minor mode to pair buffers with a companion, such that when the buffer is displayed in a window, the companion is also displayed.

Ido-ubiquitous enables ido-style completion for almost every function that uses the standard completion function completing-read.

This is a thin wrapper around erc that enables one to use the ZNC IRC bouncer with ERC.

Bookmarks are a powerful Emacs feature. This package makes them even more versatile. You can bookmark many more kinds of data. You can add tags. There are many more ways to organize and display your bookmarks. I recommend reading the extensive documentation about BookmarkPlus on the Emacs Wiki.

recent-addresses is an Emacs package that allows you to quickly look up previously used email addresses. It can be used alongside the Gnus email client.

This library implements an HTML back-end for the Org generic exporter, producing output appropriate for Haunt's html-reader.