Basic reader for Excel files
Another System Definition Facility — de facto standard build system for Common Lisp software.
Includes UIOP, the Utilities for Implementation- and OS- Portability, a library to make possible the portable development of CL software.
CMUCL is a high-performance, free Common Lisp implementation which runs on most major Unix platforms.
ANSI Common Lisp conformity test suite. Optionally it tests some other extensions.