Project Name
|
Type
|
Persistence
|
Replication
|
High Availability
|
Transactions
|
Rack-locality Awareness
|
Implementation Language
|
Influences, Sponsors
|
License
|
Aerospike
|
NoSQL database
|
Yes, Hybrid DRAM and flash for persistence
|
Yes
|
Yes, Distributed for scale
|
Yes
|
Yes
|
C (small bits of assembly language)
|
Aerospike
|
AGPL v3
|
AllegroGraph
|
Graph database
|
Yes
|
No - v5, 2010
|
Yes
|
Yes
|
No
|
Common Lisp
|
Franz Inc.
|
Proprietary
|
Apache Ignite
|
Key-value
|
To and from an underlying persistent storage (e.g. an RDBMS)
|
Yes
|
Yes
|
Yes
|
Yes
|
Java
|
Apache, GridGain Systems
|
Apache 2.0
|
Apache Jackrabbit
|
Key-value & Hierarchical & Document
|
Yes
|
Yes
|
Yes
|
Yes
|
likely
|
Java
|
Apache, Roy Fielding, Day Software
|
Apache 2.0
|
Berkeley DB/Dbm 1.x
|
Key-value
|
Yes
|
No
|
No
|
No
|
No
|
C
|
old school
|
Various
|
Berkeley DB Sleepycat/Oracle Berkeley DB 5.x
|
Key-value
|
Yes
|
Yes
|
Yes
|
Yes
|
No
|
C, C++, or Java
|
dbm, Sleepycat/Oracle
|
dual GPL-like Sleepycat License
|
Apache Cassandra
|
Key-value
|
Yes
|
Yes
|
Distributed
|
Partial Only supports CAS (Check And Set) after 2.1.1 and later[5][6]
|
Yes
|
Java
|
Dynamo and Bigtable, Facebook/Digg/Rackspace
|
Apache 2.0
|
ClustrixDB
|
scale-out relational
|
Yes
|
Yes
|
Distributed and Replication
|
Yes
|
No
|
C
|
Clustrix
|
Proprietary
|
Coherence
|
Key-value
|
Persistent data typically in an RDBMS
|
Yes
|
Yes
|
Yes
|
Yes
|
Java
|
Oracle (previously Tangosol)
|
Proprietary
|
Oracle NoSQL Database
|
Key-value
|
Yes
|
Yes
|
Yes
|
Yes
|
No
|
Java
|
Oracle
|
AGPLv3 License or proprietary
|
Couchbase
|
Document
|
Yes
|
Yes
|
Yes
|
Yes, with two-phase commits[7]
|
Yes
|
C++, Erlang, C,[8] Go
|
CouchDB, Memcached
|
Apache 2.0
|
CouchDB
|
Document
|
Yes
|
Yes
|
replication + load balancing
|
Atomicity is per document, per CouchDB instance[9]
|
No
|
Erlang
|
Lotus Notes / Ubuntu, Mozilla, IBM
|
Apache 2.0
|
Extensible Storage Engine(ESE/NT)
|
Document or Key-value
|
Yes
|
No
|
No
|
Yes
|
No
|
C++, Assembly
|
Microsoft
|
Proprietary
|
FoundationDB
|
Ordered Key-value
|
Yes
|
Yes
|
Yes
|
Yes
|
Depends on user configuration
|
C++
|
FoundationDB
|
Proprietary
|
GT.M
|
Key-value
|
Yes
|
Yes
|
Yes
|
Yes
|
Depends on user configuration
|
C (small bits of assembly language)
|
FIS
|
AGPL v3
|
Project Name
|
Type
|
Persistence
|
Replication
|
High Availability
|
Transactions
|
Rack-locality Awareness
|
Implementation Language
|
Influences, Sponsors
|
License
|
Apache HBase
|
Key-value
|
Yes. Major version upgrades require re-import.
|
Yes HDFS,[10] Amazon S3[11] or Amazon Elastic Block Store.[12]
|
Yes[13]
|
Yes[14]
|
See HDFS, S3 or EBS.
|
Java
|
Bigtable
|
Apache 2.0
|
Information Management System IBM IMS aka DB1
|
Key-value. Multi-level
|
Yes
|
Yes
|
Yes, with HALDB
|
Yes, with IMS TM
|
Unknown
|
Assembler
|
IBM since 1966
|
Proprietary
|
Infinispan
|
Key-value
|
Yes
|
Yes
|
Yes
|
Yes
|
Yes
|
Java
|
Red Hat
|
Apache 2.0
|
Memcached
|
Key-value
|
No
|
No
|
No
|
Partial Only supports CAS (Check And Set - or Compare And Swap)[15][16]
|
No
|
C
|
Six Apart/Couchbase/Fotolog/Facebook
|
BSD-like permissive copyright by Danga
|
LevelDB
|
Key-value, Bigtable
|
Yes
|
No
|
No
|
Partial Multiple writes can be combined into single operation
|
No
|
C++
|
Google
|
New BSD License
|
LightningDB
|
Key-value, memory-mapped files
|
Yes
|
No
|
No
|
Yes, ACID, MVCC
|
No
|
C
|
Symas
|
OpenLDAP Public License
|
MongoDB
|
Document (JSON)
|
Yes
|
Yes
|
fail-over
|
Partial Single document atomicity[17]
|
No
|
C++
|
10gen
|
GNU AGPL v3.0
|
Neo4j
|
Graph database
|
Yes
|
Yes
|
Yes
|
Yes
|
No
|
Java
|
Neo Technology
|
GNU GPL v3.0
|
OrientDB
|
Multi-Model (Graph-Document-Object-Key/Value)
|
Yes
|
Yes[18]
|
Yes[19]
|
Yes[20]
|
Yes
|
Java
|
Orient Technologies
|
Apache 2.0
|
Redis
|
Key-value
|
Yes. But last few queries can be lost.[21]
|
Yes
|
Yes[22]
|
Yes[23]
|
No
|
Ansi-C
|
VMWare, Memcache
|
BSD
|
ScyllaDB
|
Key-value
|
Yes
|
Yes
|
Distributed and Replication[24]
|
No[25]
|
Unknown
|
C++
|
Apache Cassandra
|
AGPL v3
|
SimpleDB (Amazon.com)
|
Document & Key-value
|
Yes
|
Yes (automatic)
|
Yes
|
Unknown
|
likely
|
Erlang
|
Amazon.com
|
Amazon internal only
|
Tarantool
|
Free-dimensional tuples with primary and secondary keys
|
Yes. (Asynchronous)
|
Yes
|
Yes
|
Yes
|
No
|
C, Lua[26]
|
Memcached, Mnesia, MySQL, Mail.ru
|
BSD
|
Project Name
|
Type
|
Persistence
|
Replication
|
High Availability
|
Transactions
|
Rack-locality Awareness
|
Implementation Language
|
Influences, Sponsors
|
License
|