ZEO is a client-server storage for ZODB <http://www.zodb.org>_ for
sharing a single storage among many clients. When you use ZEO, a
lower-level storage, typically a file storage, is opened in the ZEO
server process. Client programs connect to this process using a ZEO
ClientStorage. ZEO provides a consistent view of the database to all
clients. The ZEO client and server communicate using a custom
protocol layered on top of TCP.
Some alternatives to ZEO:
NEO <http://www.neoppod.org/>_ is a distributed-server
client-server storage.
RelStorage <http://relstorage.readthedocs.io/en/latest/>_
leverages the RDBMS servers to provide a client-server storage.
The documentation is available on readthedocs <http://zeo.readthedocs.io/en/latest/>_.