| statsd | Simple daemon for easy stats aggregation |
| qunitjs | An easy-to-use JavaScript Unit Testing framework. |
| backbone-rel | Get and set relations (one-to-one, one-to-many, many-to-one) for Backbone models |
| scrollability | Imitates iOS native scrolling in JavaScript. |
| knockback | Knockback.js provides Knockout.js magic for Backbone.js Models and Collections. |
| forms | An easy way to create, parse and validate forms in node.js |
| gauss | JavaScript statistics, analytics, and set library - Node.js and web browser ready |
| node-statsd | node.js client for Etsy'd StatsD server |
| measured | This is an alternative port of Coda Hale's metrics library. |
| googleanalytics | Google Analytics data exporting library for NodeJS |
| dnode-protocol | Implements the dnode protocol abstractly in node.js |
| JSONPath | A fork of JSONPath from http://goessner.net/articles/JsonPath/ |
| exif | A node.js library to extract Exif metadata from images. |
| hashmonitor | turn logs into metrics like a boss |
| ga | Server Side Google Analytics for Node |
| vash | Vash, the 60 billion double-dollar template-maker. Razor syntax, for JavaScript templates |
| form2json | Alternative decoder for form-urlencoded data |
| kissmetrics | A KISSmetrics library for node.js |
| perfmon | Streaming performance metrics for Node on Windows |
| es5-shimify | |
| ekg | advanced process analytics for node.js |
| imageinfo | A node.js package that returns information about an image or flash file such as type, dimensions etc. |
| node-gauges | Gaug.es API Wrapper/Client |
| better-metrics | This is an alternative port of Coda Hale's metrics library. |
| connect-analytics | Google Analytics Middleware for Connect |
| bricks-analytics | analytics and status package for bricks.js |
| googlesets | Dead simple node.js API for Google Sets |
| kuebk-zookeeper | node.js client for Apache Zookeeper |
| redis-pubsub | Simple pub/sub interface to Redis |
| jquery-lottery | Awesome lottery fun. Improving. |
| statsd-node-agent | statsd nodejs client lib. |