Daniel L. Weinreb (January 6, 1959 – September 7, 2012)[1] was an American computer scientist and programmer, with significant work in the environment of the programming language Lisp.
in computer science and electrical engineering, where he and Mike McMahon wrote EINE and ZWEI, text editors for MIT Lisp machines.
EINE made use of the windowing system of the Lisp machine, and thus is the first Emacs written for a graphical user interface (GUI).
He also participated significantly in the design of the programming language Common Lisp (CL).
[2] In 2009 Daniel Weinreb gave a Google Tech Talk about the use of Common Lisp as one of the implementation languages for the airline reservation system.