AUCTeX

AUCTeX is an extension for the text editor Emacs that enhances the experience of writing and editing LaTeX documents. LaTeX is a typesetting system used to produce high-quality documents, especially with complex formatting like scientific papers or math. AUCTeX provides smart features such as syntax highlighting, code completion, easy navigation, and tools for compiling LaTeX into PDFs—all integrated seamlessly within Emacs. This streamlines the authoring process, making it more efficient and less error-prone, especially for users working extensively with technical or scientific content.