Version 3.0β is now ready for testing!
TeXcount is a Perl script for counting words in LaTeX documents. It parses valid LaTeX documents counting words, headers, formulae (mathematics) and floats/begin-end groups.
TeXcount is included in the CTAN TeX/LaTeX archive, and thus included in several TeX distributions. If you have TeX installed, chances are you may already have TeXcount.
If you wish to be kept updated on changes and latest features, you can subscribe to the TeXcount RSS news feed.