Climacs is an open source text editor written in Common Lisp that is similar to GNU Emacs and is released under the GNU LGPL (version 2 or later) software license.
Background
Climacs uses the Common Lisp Interface Manager (CLIM) and ESA for constructing its user interface. McCLIM is the CLIM implementation that is compatible with Climacs. The editor provides source coloring based on incremental syntax analysis.
References
Climacs Wikipedia(Text) CC BY-SA