1. cl-fann
    cl-fann is a neural network library for common lisp
  2. cl-fbclient
    cl-fbclient is an interface to Firebird SQL databases
  3. cl-fftw3
    cl-fftw3 provides a CFFI interface for Common Lisp programs to use the FFTW3 Fourier transform library
  4. cl-fix
    cl-fix enables you to write FIX-based systems using Common Lisp
  5. cl-flow
    Asynchronous non-blocking concurrency in Common Lisp, similar to what green threads are for
  6. cl-flowd
    cl-flowd is an native Common Lisp interface to the flowd Netflow collector
  7. cl-fltk
    cl-fltk is a set of CFFI bindings to the FLTK GUI toolkit
  8. cl-fond
    A bindings library to libfond, a simple OpenGL text rendering engine by the same author
  9. CL-Forth
    Common Lisp implementation of the Forth 2012 Standard
  10. cl-freetype2
    cl-freetype2 is a CFFI wrapper for FreeType 2