All it needs is a suitable package.json file:
$ onejs build package.json bundle.js
Some of Node's standard library is technically supported by most browsers, and OneJS supports this by providing the install command:
$ onejs install assert
This will create a module in ./node_modules/assert/ with a package.json and a OneJS version of Node's assert module.
Azer said he created this project for Multiplayer Chess, which is a web-based chess game that supports up to 25 players.
Do you like video games, or at least the DualShock 3 controller? node-pad (npm: node-pad) by Andre Tangen is a game controller library that currently supports Sony's controller:
The author has included Jasmine tests, and the project depends on Andre's node-hid fork which is built using node-waf.
CouchPress (GitHub: koostudios / couchpress, License: MIT, npm: couchpress) by Alexander Yuen is a CouchDB and Express-based publishing platform. It's currently very simple, but includes a minimal administration interface, a WYSIWYG editor, and the beginnings of a theming engine.
The author is planning on adding a Markdown editor, and support for plugins. He's very open to suggestions, so if you're interested in supporting a Node-based CMS then try getting in touch with him. Contact details are available in his 0.1 announcement post: CouchPress: Announcing Version 0.1.