An Emacs mode currently supporting font locking, declaration scanning, documentation, indentation, hugs interaction.

A software package that turns Emacs into a comprehensive system for creating, editing, debugging, and documenting Java applications. Information about installing and using JDE, FAQ, package download and contributions.

The development homepage of the Mode for editing C/C++ and other languages with similar syntax.

Sourceforge project page of a major mode for editing PHP source.

Integration of various Lisp implementations (mostly Common Lisp systems and various Scheme dialects) within Emacs.

CEDET is a collection of tools written with the end goal of creating an advanced development environment for Emacs users.

Python support for Emacs and XEmacs.

A source code browser for Emacs. It is a global minor-mode which displays a couple of windows that can be used to browse directories, files and methods. It supports method parsing for Java, C, C++, Elisp. [Open source, GPL]

Mode for programming in ADA. Downloads and documentation.

Major mode that provides various features for editing ANTLR grammar files.