261. Cedilla
     Cedilla is a document preparation application with very complete Unicode support
262. cells
     cells is a dataflow extension to CLOS (think spreadsheet-type programming, with slots being spreadsheet cells) by Kenny Tilton
263. cells-gtk
     cells-gtk is a GTK+ based toolkit that enables a declarative-style description of a GUI
264. Celtk
     Cetlk is a Common Lisp wrapper of Tcl/Tk GUI toolkit, with Cells Inside(tm)
265. Cerberus
     This is an implementation of the Kerberos v5 authentication protocol in Common Lisp
266. cesdi
     cesdi provides a compute-effective-slot-definition-initargs generic function that allows for more ergonomic initialization of effective slot definition objects
267. CFFI
     CFFI, the Common Foreign Function Interface, purports to be a portable foreign function interface for Common Lisp
268. CFFI and ABCL
     As ABCL version 1.3.3 in Linux when you try to load CFFI:
269. cffi-cairo
     CFFI-CAIRO is a set of CL bindings for the graphics library Cairo using CFFI
270. cffi-clutter
     cffi-clutter is a set of bindings to the Clutter GUI toolkit

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