Generate an unique ID for use in a distributed environment.
Generate a slug with a lot of options; create of so called 'static' or 'Clean URL' or 'Pretty URL' or 'nice-looking URL' or 'Speaking URL' or 'user-friendly URL' or 'SEO-friendly URL' from a string.
BDD style assertions for node and the browser.
Higher-order functions and common patterns for asynchronous code
Caterpillar is the ultimate logging system for Node.js, based on transform streams you can log to it and pipe the output off to different locations, including some pre-made ones. Caterpillar also supports log levels according to the RFC standard, as well as line, method, and file fetching for messages. You can even use it in web browsers with caterpillar-browser.