This package lets you auto-format source code in many languages using the same command for all languages, instead of learning a different Emacs package and formatting command for each language. Over 70 languages are supported, including Emacs Lisp, Kotlin, Go and Rust.
Integrate the French grammar and typography checker Grammalecte with Flycheck to automatically look for mistakes in your writings. It also provides an easy way to find synonyms and antonyms for a given word (to avoid repetitions for example).
find-file-in-project
finds files or directories quickly in the current project. The project root is detected automatically when Git, Subversion or Mercurial are used. It also provides functions to assist in reviewing changes on files.
Fill-column-indicator graphically indicates the location of the fill column by drawing a thin line down the length of the editing window.