- Apply-argv - Apply-argv is a lightweight command-line options parser library
- Clon - There are three packages by the name of "CLON", although the third one doesn't actually introduce any conflict because the package is named com.dvlsoft.clon
- command-line-arguments - command-line-arguments is a command-line options parser library for CL programs to integrate to the shell command-line
- unix-options - unix-options is a library for processing Unix-style command-line arguments
command-line options parser
Here is a list of command-line options parsing libraries. Those libraries are useful for creating standalone Lisp programs.