GNU Emacs

GNU Emacs is a highly customizable and powerful text editor used primarily for writing and managing code, documents, and other text-based tasks. Unlike simple editing programs, it functions as an integrated environment, supporting programming, note-taking, email, and more through extensions. Built on an open-source foundation, it allows users to tailor its features to their needs. Its versatility makes it popular among developers, writers, and researchers who require a flexible tool that can adapt to a wide range of workflows, all within a single, extensible platform.