CGI
To install Kepler on Apache as CGI, you will need a CGI binary. On Windows... On UNIX, build the CGI binary as explained in UNIX Installation.
Then put the binary in....
Getting Kepler to run as CGI on Apache
FastCGI
To install Kepler on Apache as CGI, you will need... On Windows... On UNIX, build the FastCGI launcher as explained in Building FastCGI on UNIX.
mod_lua
To install Kepler on Apache with mod_lua, you will need... On Windows... On UNIX, build the FastCGI launcher as explained in Building mod_lua on UNIX.