The inclusion of ShellJS makes it feel closer to make than Grunt, so if Grunt isn't quite what you want then indev might be what you're looking for.
The readme includes benchmarks for each algorithm, and a script is included so you can use it to compress things on the command-line.
thin-orm (License: MIT, npm: thin-orm) by Steve Hurlbut is a lightweight ORM module for SQL databases with a MongoDB-inspired API:
var orm = require('thin-orm');
.columns('id', 'login', 'firstName', 'lastName', 'createdAt');
It's designed to be used with existing libraries, like pg and sqlite3, so you'll need one of those modules installed to use it.
thin-orm currently supports the following features:
Optional camelCase property-to-field mapping
SQL injection protection
Steve has included Nodeunit tests that cover the basic functionality, and some integration tests for PostgreSQL and SQLite.
node-tar.gz (License: MIT, npm: tar.gz) by Alan Hoffmeister is a tar helper module and command-line utility, built with Node's zlib module, tar, and commander.
The module can be used to easily tar and compress a folder, and it will install a targz script that supports the zxvf flags. There are also Vows tests.
connect-bruteforce (License: GPLv2, npm: connect-bruteforce) by Pedro Narciso García Revington provides middleware that can help prevent bruteforce attacks. It will add a small delay to requests when an attack is detected.
The author has written a useful example that requires captcha validation after a successive number of validation failures: express-recaptcha.