py-isort.el integrates isort into Emacs.

Reformat shell script code in Emacs using shfmt

Ivy - a generic completion frontend for Emacs, Swiper - isearch with an overview, and more. Oh, man!

Emacs incremental completion and selection narrowing framework

Emacs client/library for the Language Server Protocol

Transpose windows arrangement in a frame

Python Black for Emacs

Emacs mode for the Go programming language

A powerful and flexible Emacs major mode for editing PHP scripts