Cm_Cache_Backend_Redis
A Zend_Cache backend for Redis with full support for tags (works great with Magento)
Cm_Cache_Backend_File
Much improved replacement for Zend_Cache_Backend_File - works great with Magento!
Cm_Diehard
Advanced full page cache module for Magento supporting multiple caching methods (browser, reverse proxies, app cache) and multiple hole-punching methods...
magento cache benchmark
Benchmarking script for comparing performance of Magento cache backends.
magento mongo
MongoDb abstraction layer and atomic job queue for Magento
Cm_MountStorage
Magento media storage driver using a mounted filesystem as a backend.
php redis session abstract
A Redis-backed PHP session handler with optimistic locking
Cm_RedisSession
Redis-based session handler for Magento with optimistic locking
Cm_MongoSession
A session handler for Magento powered by MongoDb efficiently implementing optimistic locking
mongodb php odm
A simple but powerful set of wrappers for using MongoDb in PHP (also a Kohana 3 module)