.. spelling:: lmdb LMDB lmdbxx
- :ref:`pkg.leveldb` - a fast key-value storage library
- :ref:`pkg.lmdb` - Lightning Memory-Mapped Database Manager
- :ref:`pkg.lmdbxx` - C++11 wrapper for the LMDB embedded B+ tree database library
- :ref:`pkg.MySQL-client`
- :ref:`pkg.odb-mysql`
- :ref:`pkg.odb-pgsql`
- :ref:`pkg.odb-sqlite`
- :ref:`pkg.PostgreSQL`
- :ref:`pkg.rocksdb` - an embeddable persistent key-value store for fast storage