| 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 |
