This are a few of the things that I am to following :

Server side:

Testing:

- Expresso [1]: TDD framework for node -- high speed parallel testing!

- Zombie.js [2]: fast, headless full-stack testing using Node.js

Tools:

- load.js [3]: Lazy load your JS

- npm [4] a package manager for node

- JSDoc [5] Documentation tool

- Docco [6] Literate documentation.

- underscore [7] provides a lot of the functional programming

- node-openid [8] openid.

Frameworks:

- Express [8] Sinatra inspired web development framework for node

[1] http://visionmedia.github.com/expresso/

[2] http://zombie.labnotes.org/

[3] https://github.com/chriso/load.js

[4] https://github.com/isaacs/npm

[5] https://github.com/micmath/JSDoc

[6] https://github.com/jashkenas/docco

[7] http://documentcloud.github.com/underscore/

[8] https://github.com/havard/node-openid

[9] https://github.com/visionmedia/express