This package provides a frontend for grepping tools like ag and ack, as well as features for editing search results.

Prism is a Rainbow Blocks-like mode for Emacs. It preserves non-color face properties and allows configuration of faces and colors.

REDUCE IDE is an Emacs package that provides an Integrated Development Environment for the REDUCE computer algebra system within the GNU Emacs editor. Its two major components are Emacs Lisp libraries that provide major modes for editing REDUCE source code and running a command-line version of REDUCE in an Emacs window.

emacs-validate-html installs the command validate-html, which sends the current buffer to the World Wide Web Consortium’s HTML Validator service and displays the results in a buffer in Compilation mode.

Emacs wgrep allows you to edit a grep buffer and apply those changes to the file buffer. Several backends are supported beside the classic grep: ack, ag, helm and pt.

This library lets elisp authors easily define an idiomatic command to reformat the current buffer using a command-line program, together with an optional minor mode which can apply this command automatically on save.

This package provides a major mode for editing vCard files in Emacs.

Display firefox bookmarks with Emacs Helm interface

Chocolate theme is a dark, chocolatey, vibrant and subtle theme for Emacs.

This package adds support for some LSP extensions to emacs-eglot.

emacs-htmlize converts the buffer text and the associated decorations to HTML. Output to CSS, inline CSS and fonts is supported.

This package provides completion for the Fish shell to pcomplete (used by shell and Eshell). You can set it up globally with:

(when (and (executable-find "fish")
           (require 'fish-completion nil t))
  (global-fish-completion-mode))

Alternatively, you can call the fish-completion-mode manually or in shell/Eshell mode hook.

The package emacs-bash-completion is an optional dependency: if available, fish-completion-complete can be configured to fall back on bash to further try completing. See fish-completion-fallback-on-bash-p.

emacs-rpm-spec-mode provides an Emacs major mode for editing RPM spec files.

Kibit Helper provides functions to work with the Kibit Leiningen plugin for detecting and improve non-idiomatic Clojure source code.

Ace-jump-mode is a fast/direct cursor location minor mode. It creates an N-Branch search tree internally and marks all the possible position with predefined keys in within the whole Emacs view. This allows you to move to the character, word, or line almost directly.

This package allows using Ace jump to a candidate in Helm window.

This package makes it easy to reformat Python code using python-black and python-black-macchiato for entire and partial buffers, respectively.

This package provides a lobsters client for Emacs to browse stories and comments.

This package provides a group of backends permitting auto-completion for AUCTeX.

For speed reading, or just more enjoyable reading. Narrows the buffer to show one word at a time. Adjust speed / pause as needed.

This package provides an XML-RPC client for Emacs capable of both synchronous and asynchronous method calls using the url package's async retrieval functionality. xml-rpc.el represents XML-RPC datatypes as Lisp values, automatically converting to and from the XML datastructures as needed, both for method parameters and return values, making using XML-RPC methods fairly transparent to the Lisp code.

The Internet Engineering Task Force (IETF) and the Internet Society (ISOC) publish various Internet-related protocols and specifications as "Request for Comments" (RFC) documents. The built-in Emacs module "ffap" (Find File at Point) has the ability to recognize names at point which look like "RFC1234" and "RFC-1234" and load the appropriate RFC from a remote server. However, it fails to recognize a name like "RFC 1234". This package enhances ffap so that it correctly finds RFCs even when a space appears before the number.

This package provides a simple testing library for Emacs.

Elquery is a library that lets you parse, query, set, and format HTML using Emacs Lisp. It implements most of the querySelector API, and can get and set HTML attributes.