- berkeley-db - Paul Foley has written an interface to the Berkeley DB v4 database for CMUCL
- cffi-gdbm - cffi-gdbm is an interface for the gdbm database
- chillax - Chillax is an interface to CouchDB
- cl-btree - B-Tree implemented in Common Lisp
- cl-influxdb - cl-influxdb is an native Common Lisp interface to the InfluxDB time-series and event database
- cl-mongo - cl-mongo is an interface to the MongoDB document database
- cl-naive-store - cl-naive-store is a database (document store to be more precise) which is persisted, in memory (lazy loading), indexed and written completely in Common Lisp
- cl-neo4j - cl-neo4j is an interface to the Neo4j graph database
- cl-redis - CL-Redis: Common Lisp client library for Redis database, an advanced key/value store
- cl-swap-file - Swap file is a fixed block size storage library implemented in Common Lisp
- cl-tc - cl-tc is a set of bindings for the Tokyo Cabinet database
- cl-wal - cl-wal implements simple write ahead log
- clouchdb - Clouchdb is an interface to the CouchDb databases
- de.setf.cassandra - de setf cassandra is an interface to the Apache Cassandra distributed data store
- fact-base - A simple-ish implementation of an append-only triple-store
- hh-redblack - hh-redblack provides in-memory and disk-based red-black trees
- neo4cl - neo4cl is a simple interface to the Neo4j graph database
- NET.QUADIUM.LDAP - NET QUADIUM LDAP is an LDAP library for Common Lisp
- pounds - Provides two kinds of memory-mapped files: a database, and a circular log
- query-fs - Query-FS is a FUSE-based filesystem that presents database queries as filesystem trees
StructuredStorage
aka NOSQL