Given how young node.js is it has a lot of modules including:<p>Redis <a href="http://github.com/fictorial/redis-node-client" rel="nofollow">http://github.com/fictorial/redis-node-client</a><p>memcache: <a href="http://github.com/elbart/node-memcache" rel="nofollow">http://github.com/elbart/node-memcache</a><p>MySQL support using DBSlayer<p>And it's fairly easy to implement other stuff using node.js's TCP module. This said, it could definitely use more modules, but it's a young project and I am sure they will come.