SLOCCount

SLOCCount a set of tools for counting physical Source Lines of Code (SLOC) in a large number of languages of a potentially large set of programs.Also sloc2html tool, takes output of SLOCCount and makes it HTML, and SLOC Compare to take several sloccount output files and visualizes the output to see changes over time.This suite of tools was used in my papers More than a Gigabuck: Estimating GNU/Linux's Size and Estimating Linux's Size to measure the SLOC of entire GNU/Linux distributions, and my essay Linux Kernel 2.6: It's Worth More! Others have measured Debian GNU/Linux and the Perl CPAN library using this tool suite. SLOCCount runs on GNU/Linux, FreeBSD, Apple Mac OS X, Windows, and hopefully on other systems too.