| underscore.string | String manipulation extensions for Underscore.js javascript library. |
| YouAreDaChef | Coffeescript/Javascript method combinations for Underscore projects |
| underscore.string-thinkfuse | (Official repo was moved to https://github.com/epeli/underscore.string) String manipulation extensions for Underscore.js javascript library. |
| node-cache | a node internal caching module |
| collection_functions | js library that provides typical collection/enumerable functions (think underscore.js) - but it's agnostic about storage and iteration details. |
| qfunction | Make sure specified function runs one at a time |
| uquery | A project to take some core jQuery functions and port them for use in Node.js as underscore.js mixins. |