1. point-polygon
    point-polygon is a Common Lisp library to test if a point lies inside or outside a polygon in 2 dimensions coordinates
  2. poiu
    poiu is an asdf extension that builds in parallel
  3. polisher
    Infix notation to S-expression (Polish notation) translator for Common Lisp
  4. poly-pen
    Poly-pen is a graphical proxy for Common Lisp
  5. PonzuDB
    This was just an experimental project
  6. Poplog
    Poplog is a multi-language programming system which includes its own Common Lisp implementation, as well as Standard ML, Prolog, and Pop-11
  7. port
    ASDF port of CLOCC PORT
  8. Portable CommonLoops
    Portable CommonLoops is a reference CLOS/MOP implementation originally developed by Xerox, deriving from the Loops Project
  9. Portable Exit
    A portability layer for ending the Lisp image
  10. Portable Hemlock
    "An attempt to free Hemlock from its CMUCL prison."