Totally insecure file transfers for those not in control of the receiving end
cl-ftp is an increasingly modified version of Matthew Danish's cl-ftp, put here both because the mapcar.org domain has lapsed and because the various changes may be useful to other people. It provides FTP client functionality to Common Lisp programs using the same API mrd's did.
The easiest way to get cl-ftp is to use Quicklisp: (ql:quickload "ftp").
You can also download the latest version of cl-ftp as a gzipped tarball
or check it out from the darcs repository using `darcs get http://repo.kepibu.org/cl-ftp/`. It is also asdf-installable in theory; provided you account for the system actually being named "ftp"—not "cl-ftp"!—, and you have my public key.
If you have previously checked out from the darcs repository, note that the repo URL has changed. The old URL (http://web.kepibu.org/code/lisp/cl-ftp/repo/) was terrible. However, it redirects to the new URL, so existing repos should continue to get updates without input.
If you want the version which uses acl-compat, you'll be looking for the slightly older 1.3.2 version (sig).
see the original documentation
In addition to the 1.3.2 differences, the darcs repository also includes a conversion from acl-compat to usocket thanks to Hans Hübner.
The tarballed and ASDF-installable version of cl-ftp has some minor differences to MRD's original version, mostly minor bugfixes for clisp. See the changelog for more specific details.
My e-mail address is pix@kepibu.org. You can also sign up for the mailing list for a little public back-and-forth, or to be notified of any updates.