| Horde_Cache | This class provides the API interface to the cache storage drivers. |
| Horde_Cache_Exception | Exception handler for the horde/Cache package. |
| Horde_Cache_Storage_Apc | Cache storage in the Alternative PHP Cache (APC). |
| Horde_Cache_Storage_Base | The abstract implementation of the cache storage driver. |
| Horde_Cache_Storage_Eaccelerator | Cache storage in eAccelerator (version 0.9.5+). |
| Horde_Cache_Storage_File | Cache storage in the filesystem. |
| Horde_Cache_Storage_Hashtable | Cache storage using the Horde_HashTable interface. |
| Horde_Cache_Storage_Memcache | Cache storage on a memcache installation. |
| Horde_Cache_Storage_Memory | Cache storage in PHP memory. |
| Horde_Cache_Storage_Memoryoverlay | A memory overlay for a cache backend. Caches results in PHP memory for the current access so the underlying cache backend is not continually hit. |
| Horde_Cache_Storage_Mock | Cache storage in PHP memory. |
| Horde_Cache_Storage_Mongo | Cache storage in a MongoDB database. |
| Horde_Cache_Storage_Null | Null cache storage driver. |
| Horde_Cache_Storage_Session | Cache storage in a PHP session. |
| Horde_Cache_Storage_Sql | Cache storage in a SQL databsae. |
| Horde_Cache_Storage_Stack | Driver that loops through a given list of storage drivers to search for a cached value. Allows for use of caching backends on top of persistent backends. |
| Horde_Cache_Storage_Xcache | Cache storage in Xcache. |