1. SC Language
    Tasuku Hiraishi's SC is an s-exp syntax (Scheme-like) for writing C code, implemented in Common Lisp
  2. scalpl
    Market maker + APIs to several Bitcoin exchanges
  3. Schedulers
    Scheduling of events/tasks/..., cron-like functionality, etc
  4. Scheme
    Scheme is a statically scoped and properly tail-recursive dialect of the Lisp programming language designed by Guy Lewis Steele Jr
  5. Scheme88
    Scheme88 is a re-implementation of Indiana University's Scheme84 programming language to run in Common Lisp
  6. schemeish
    Scheme-ish syntax and namings for Common Lisp
  7. Science
    Natural Science libraries:
  8. SCLF
    SCLF is Walter C
  9. SCOLI
    SCOLI is an interface to the Sesame triple store
  10. Scone
    Scone is a high-performance, open-source knowledge-base (KB) system intended for use as a component in many different software applications