gnus-harvest notices email address in every message or post you read or write, and collects them in a SQLite database, which can be easily and quickly queried to determine the completion list. It optionally uses BBDB and Message-X.

emacs-shift-number provides commands shift-number-up to increase and shift-number-down to decrease the number at point.

This Emacs library provides Helm interface for Yasnippet.

Vertico is an Emacs package that provides a vertical completion UI based on the default completion system. Posframe is an Emacs package that provides a way to pop up a frame at point. Vertico-posframe is an Emacs package and a Vertico extension which provides a way to pop up a frame at point to show a vertical completion UI.

Emacs SQLite is a simple SQLite interface for connecting and retrieving information using the SQLite program through Elisp programming. It is not intended as a user interface.

This package provides an Emacs interface for browsing YouTube videos and comments.

This package provides a library to encrypt/decrypt a string or file with openssl command.

ENWC is the Emacs Network Client. It is designed to provide a front-end to various network managers, such as NetworkManager and Wicd. Currently, only NetworkManager and Wicd are supported, although experimental support exists for Connman.

This package provides both a basic major mode for editing CSound files, as well as a REPL for fast feedback when composing and sound-designing using CSound.

Smex is a M-x enhancement for Emacs. Built on top of Ido, it provides a convenient interface to your recently and most frequently used commands. And to all the other commands, too.

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

This library provides literate programming for Calc. There is both a major and a minor mode. The major mode does some basic syntax highlighting, while the minor mode only evaluates all Calc statements while typing. In particular, the minor mode works quite well with Org or Markdown modes, or other markup language major modes.

This Emacs package is an extension to ert, and creates emacs-exemplify-ert–like examples. It aims at writing test cases in a simplified form.

Circadian may reduce eye strain by automatically switching between light and dark themes based on daytime. It is inspired by color temperature shifting tools and brightness adaption software.

Wanderlust is an mail/news management system on Emacsen. It supports IMAP4rev1(RFC2060), NNTP, POP and local message files.

The main features of Wanderlust:

• Pure elisp implementation.

• Supports IMAP4rev1, NNTP, POP(POP3/APOP), MH and Maildir format.

• Unified access method to messages based on Mew-like Folder Specification.

• Mew-like Key-bind and mark handling.

• Manages unread messages.

• Interactive thread display.

• Folder Mode shows the list of subscribed folders.

• Message Cache, Disconnected Operation.

• MH-like FCC (Fcc: %Backup and Fcc: $Backup is allowed).

• MIME compliant (by SEMI).

• Transmission of news and mail are unified by Message transmitting draft.

• Graphical list of folders.

• View a part of message without retrieving the whole message (IMAP4).

• Server-side message look up (IMAP4), multi-byte characters are allowed.

• Virtual Folders.

• Supports compressed folder using common archiving utilities.

• Old articles in folders are automatically removed/archived (Expiration).

• Automatic re-file.

• Template function makes it convenient to send fixed form messages.

Parsec is a parser combinator library for Emacs Lisp, similar to Haskell's Parsec library. It contains most of the parser combinators in Text.Parsec.Combinator, and more combinators can be added if necessary! Most of the parser combinators have the same behavior as their Haskell counterparts. Parsec also comes with a simple error handling mechanism so that it can display an error message showing how the parser fails.

Selectrum is a solution for incremental narrowing in Emacs, replacing Helm, Ivy, and IDO. Its design philosophy is based on choosing the right abstractions and prioritizing consistency and predictability over special-cased improvements for particular cases. As such, Selectrum follows existing Emacs conventions where they exist and are reasonable, and it declines to implement features which have marginal benefit compared to the additional complexity of a new interface.

This Emacs package provides a global minor mode to automatically balance windows (keeping them roughly the same size) whenever the window configuration changes, e.g. after splitting or deleting a window.

This package provides an alternative dashboard for Emacs.

This library provides helpers for single-window-per-frame execution of buffer-exposing commands.

Selected provides the selected-minor-mode for Emacs. When selected-minor-mode is active, the keybindings in selected-keymap will be enabled when the region is active. This is useful for commands that operate on the region, which you only want bound to a key when the region is active. Selected also provides selected-global-mode, if you want selected-minor-mode in every buffer.

consult-git-log-grep provides an interactive way to search the git log using consult.

This package provides an Emacs based interface for GNU Go, which can be started via M-x gnugo. It has a graphical mode where the board and stones are drawn using XPM images and supports the use of a mouse. You can switch to the graphical mode by running M-x gnugo-image-display-mode.

This package displays ElDoc documentations in a childframe. The childfrme is selectable and scrollable with mouse, even thought the cursor is hidden.