1. cacle
    cacle implements an extensible cache data structure
  2. CAD
    Computer-Aided Design (CAD) and Computer-Aided Manufacturing (CAM) software
  3. Calispel
    Calispel is a concurrency library for thread-safe message-passing channels, in the style of the occam programming language
  4. call-next-macro
    Here's a macro example that may be less of a headache to understand than rebinding
  5. call-with style
    An approach to implementing macro of the type "with-foo"
  6. CALM
    Canvas Aided Lisp Magic, create canvas-based applications with Lisp and distribute them on Linux, macOS, Windows, and the web
  7. canonicalized-initargs
    canonicalized-initargs provides a :canonicalize slot option accepting an initarg canonicalization function
  8. CAPTURED-STREAM
    captured-stream is a small Common Lisp library for viewing streams as sequences
  9. carrier
    Carrier is an async HTTP client driven by cl-async and fast-http
  10. cartesian-product-switch
    cartesian-product-switch is a macro for choosing the appropriate form to execute according to the combined results of multiple tests