The web home page for LCLint is http://larch-www.lcs.mit.edu:8001/larch/lclint/index.html. It includes a this guide in postscript format, samples demonstrating LCLint, and links to related web sites.
LCLint can be downloaded from http://larch-www.lcs.mit.edu:8001/larch/lclint/download.html or obtained via anonymous ftp from ftp://larch.lcs.mit.edu/pub/Larch/lclint/
Several UNIX platforms are supported and source code is provided for other platforms.
LCLint can also be run remotely using a form at http://larch-www.lcs.mit.edu:8001/larch/lclint/run.html