A library to embed Common Lisp and special template tags into normal text files. Can be used for dynamically generated HTML pages. [Open source, Lisp Lesser General Public Licence]
A library for Common Lisp which provides an interface to the GD Graphics Library for the dynamic creation of images. It is based on UFFI and should thus be portable to all CL implementations supported by UFFI. [Open source, BSD-style license]
Library for Common Lisp, modifies reader to have interpolation within strings similar to Perl or Unix Shell scripts; gives various ways to insert arbitrary characters into literal strings even if editor/IDE doesn't support them. [Open source, BSD-style license]
A Lisp Markup Language, i.e. it provides convenient means to convert S-expressions intermingled with code into (X)HTML, XML, or whatever. [Open source, BSD-style license]
Protocol and libraries that help access common object runtimes (JVM, CLI/CLR (.MET)) and their libraries, from Lisp. Open source, Common Public License.
mod_lisp is an Apache plugin which lets apache send requests to a lisp process to generate dynamic content. Think of it as java server pages for lisp. cl-pdf is a library to create files in Portable Document Format from Common Lisp.