1. simplified-types
    Homepage: https://github.com/marcoheisig/simplified-types
  2. simplot
    Simplot is a 2-dimensional data plotting application for mathematics and scientific data with a simple interface
  3. SimpSamp
    SimpSamp is a statistics library for simple random sampling without replacement
  4. single-threaded-ccl
    A simple patch to allow Clozure CL to run in single-threaded mode
  5. site-generator
    Is a BSD licensed, command-line static site generator that has support for arbitrary content and multiple languages
  6. Skippy
    Skippy reads and writes GIF image files
  7. skitter
    A repl friendly event system for games
  8. slashcachelisp
    slashcache.lisp uses slashdot.lisp to build a cache of slashdot.org headlines
  9. slashdotlisp
    slashdot.lisp is a small package of code for reading slashdot headlines
  10. SLIK
    SLIK (Simple Lisp Interface Kit) is a CLOS-based GUI toolkit that provides a thin abstraction layer over CLX