| nconf | Hierarchical node.js configuration with files, environment variables, command-line arguments, and atomic object merging. |
| simpledb | An Amazon AWS SimpleDB library for Node.js that is user-friendly and fault-tolerant |
| node-tiny | a small database for node.js |
| searchjs | A library for filtering JavaScript objects based on a json SQL-like language, jsql |
| node-dbi | A SQL database abstraction layer strongly inspired by the PHP Zend Framework Zend_Db API, with support of multiple Node.js database engines |
| node-mdbm | node.js client for Global-based NoSQL database |
| perstore | A comet-based distributed publish/subscribe hub for server side JavaScript (Node, Rhino/Narwhal) |