1. Knut Arild Erstad
    Is a Person, most of the time
  2. kons-9
    3D computer graphics system in Common Lisp
  3. KPAX
    A Common Lisp web framework by Sven Van Caekenberghe
  4. KR
    Knowledge Representation is a highly flexible and dynamic prototype-based object system for Common Lisp
  5. KRMA
    A cross-platform graphics abstraction layer
  6. l-math
    L-MATH is a library for simple linear algebra in geometric applications
  7. L4
    L4 is a Forth interpreter written in Common Lisp
  8. LALR
    LALR is a LALR(1) parser generator available at the CMU AI repository.
  9. lambda-gtk
    Lambda-GTK is an apparently complete set of GTK+2 bindings, autogenerated by FFIGEN
  10. lambda-reader
    lambda-reader is a language extension that lets you use the Unicode character λ for LAMBDA in the Lisp reader and printer