ILISP is a package that is designed to integrate various Lisp implementations (mostly Common Lisp systems and various Scheme dialects, including Guile) within Emacs (or XEmacs). ILISP runs an inferior Lisp process (in Emacs parlance) and provides a specialized set of commands, key bindings, and menus to ease the interaction with it. ILISP commands access the underlying Lisp process and provide ways to make the editing, compilation, and execution of Lisp programs much easier.
CL-BibTeX is a replacement for the BibTeX program, written in Common Lisp. The aim is to enable the user to format bibliographic entries using Common Lisp programs, rather than using the stack language of BibTeX style files. A compiler that transforms BibTeX style files into comprehensible Common Lisp programs is included.
LattE (Lattice point Enumeration) is computer software dedicated to the problems of counting and detecting lattice points inside convex polytopes, and the solution of integer programs. It contains an implementation of Barvinok's algorithm. LattE was developed in 2002/2003 by a team directed by J.A. De Loera at UC Davis. Current development (since 2006) takes place under the name "LattE macchiato".