<s>
This	O
article	O
is	O
a	O
list	O
of	O
in-memory	B-General_Concept
database	I-General_Concept
system	I-General_Concept
software	O
.	O
</s>
<s>
NameDeveloperAvailabilityClient	O
InterfaceLicenseDescription/NotesAerospike	O
DBSAerospike	O
Company2012Java	O
,	O
C#	O
,	O
C	B-Language
,	O
Python	O
,	O
Go	O
,	O
Node.js	O
,	O
Perl	O
,	O
libevent	O
,	O
PHP	O
,	O
Ruby	O
,	O
RustOpen	O
Source	O
(	O
AGPL	O
)	O
Flash-optimized	O
in-memory	B-General_Concept
open	O
source	O
NoSQL	O
database.ALTIBASE	O
HDBAltibase	O
Corporation1999Java	O
,	O
C	B-Language
,	O
C++	B-Language
,	O
JDBC	O
,	O
ODBC	B-Application
,	O
SQLProprietaryAltibase	O
is	O
a	O
hybrid	O
DBMS	O
that	O
combines	O
an	O
in-memory	B-General_Concept
database	I-General_Concept
with	O
a	O
conventional	O
disk-resident	O
database	O
in	O
a	O
single	O
unified	O
engine	O
.	O
</s>
<s>
It	O
supports	O
full	O
ACID	O
properties	O
and	O
standard	O
connectivity	O
interfaces	O
such	O
as	O
JDBC	O
and	O
ODBC	B-Application
,	O
as	O
well	O
as	O
interoperability	O
.	O
</s>
<s>
Altibase	B-Operating_System
Corporation	O
has	O
recently	O
made	O
the	O
decision	O
to	O
discontinue	O
the	O
Altibase	B-Operating_System
7.1	O
open	O
source	O
edition	O
,	O
effective	O
March	O
17th	O
,	O
2023	O
,	O
on	O
its	O
Github	O
page	O
(	O
https://github.com/Altibase/altibase	O
)	O
.ALTIBASE	O
XDBAltibase	O
Corporation1999Java	O
,	O
C	B-Language
,	O
C++	B-Language
,	O
JDBC	O
,	O
ODBC	B-Application
,	O
SQLProprietaryGeneral	O
purpose	O
database	O
that	O
has	O
high	O
data	O
processing	O
speeds	O
in	O
main-memory	O
alone	O
.	O
</s>
<s>
Supports	O
full	O
ACID	O
properties	O
,	O
standard	O
connectivity	O
interfaces	O
such	O
as	O
JDBC	O
and	O
ODBC	B-Application
[	O
fully	O
supported ]	O
as	O
well	O
as	O
interoperability.Apache	O
IgniteApache	O
Software	O
Foundation	O
,	O
GridGain	O
Systems2014Java	O
,	O
SQL	O
,	O
JDBC	O
,	O
ODBCOpen	O
Source	O
(	O
Apache	O
License	O
Version	O
2.0	O
)	O
Apache	B-Application
Ignite	I-Application
is	O
an	O
in-memory	B-General_Concept
computing	O
platform	O
that	O
is	O
durable	O
,	O
strongly	O
consistent	O
,	O
and	O
highly	O
available	O
with	O
powerful	O
SQL	O
,	O
key-value	O
and	O
processing	O
APIs	O
.	O
</s>
<s>
Version	O
2.0	O
)	O
ArangoDB	B-Operating_System
is	O
a	O
transactional	O
native	O
multi-model	O
database	O
supporting	O
two	O
major	O
NoSQL	O
data	O
models	O
(	O
graph	O
and	O
document	O
)	O
with	O
one	O
query	O
language	O
.	O
</s>
<s>
Written	O
in	O
C++	B-Language
and	O
optimized	O
for	O
in-memory	B-General_Concept
computing	O
.	O
</s>
<s>
In	O
addition	O
ArangoDB	B-Operating_System
integrated	O
RocksDB	B-Language
for	O
persistent	O
storage	O
.	O
</s>
<s>
ArangoDB	B-Operating_System
supports	O
Java	O
,	O
JavaScript	O
,	O
Python	O
,	O
PHP	O
,	O
NodeJS	O
,	O
C++	B-Language
and	O
Elixir	O
.	O
</s>
<s>
For	O
resilient	O
cluster	O
behavior	O
,	O
ArangoDB	B-Operating_System
offers	O
a	O
Raft-based	O
cluster	O
management.Datablitz	O
(	O
formerly	O
Dali	O
)	O
Bell	O
Labs	O
(	O
Alcatel-Lucent	O
)	O
1997ProprietaryDali	O
prototype	O
was	O
a	O
research	O
project	O
at	O
Bell	O
Labs	O
.	O
</s>
<s>
It	O
was	O
commercialized	O
and	O
used	O
by	O
Lucent	O
as	O
database	O
for	O
in	O
premier	O
wireline	O
and	O
wireless	O
products.Exasol	O
Exasol	O
AG2000	O
JDBC	O
,	O
ODBC	B-Application
,	O
ADO.NET	B-Device
,	O
Python	O
,	O
SQL	O
,	O
R	O
,	O
Go	O
,	O
Rest	O
API	O
Proprietary	O
Exasol	O
is	O
in-memory	B-General_Concept
,	O
column-oriented	B-General_Concept
analytical	O
relational	B-Application
database	I-Application
management	I-Application
system	I-Application
which	O
is	O
developed	O
by	O
Exasol	O
AG	O
.	O
</s>
<s>
EhcacheTerracotta	O
,	O
Inc	O
.	O
(	O
Software	O
AG	O
)	O
2006JavaOpen	O
source	O
(	O
Apache	O
License	O
)	O
For	O
Java	O
,	O
distributedeXtremeDBMcObject2001SQL	O
,	O
Lua	O
,	O
C	B-Language
,	O
C++	B-Language
,	O
C#	O
,	O
Java	O
,	O
PythonProprietaryCross-platform	O
,	O
including	O
Linux	O
,	O
Windows	O
,	O
RTOS	O
and	O
server	O
platforms	O
.	O
</s>
<s>
Interfaces	O
include	O
type-safe	O
,	O
native	O
C/C	O
++	O
;	O
native	O
Java	O
&	O
.NET	O
;	O
SQL/ODBC/JDBC	O
.	O
</s>
<s>
Specialized	O
editions	O
for	O
(	O
for	O
example	O
)	O
clustering	O
,	O
high	O
availability	O
,	O
64-bit	O
support	O
,	O
and	O
hybrid	O
(	O
in-memory	B-General_Concept
and	O
persistent	O
)	O
storage	O
.	O
</s>
<s>
eXtremeDB	B-Application
Financial	O
Edition	O
implements	O
columnar	O
data	O
handling	O
,	O
vector-based	O
statistical	O
function	O
library	O
,	O
integrated	O
performance	O
monitoring.H2	O
(	O
DBMS	O
)	O
H2Java	O
,	O
ODBC	B-Application
,	O
JDBCOpen	O
Source	O
(	O
Mozilla	B-License
Public	I-License
License	I-License
or	O
Eclipse	O
Public	O
License	O
)	O
For	O
JavaHSQLDBHSQL	O
Development	O
Group2001Java	O
,	O
SQL	O
,	O
ODBCOpen	O
Source	O
(	O
BSD	B-Operating_System
License	I-Operating_System
)	O
Relational	O
,	O
for	O
JavaHazelcastHazelcast	O
TeamJava	O
,	O
C#	O
,	O
C++	B-Language
,	O
Node.js	O
,	O
Python	O
,	O
GoOpen	O
Source	O
(	O
Apache	O
License	O
2.0	O
)	O
Hazelcast	B-Application
is	O
an	O
in-memory	B-General_Concept
computing	O
platform	O
that	O
runs	O
applications	O
with	O
extremely	O
high	O
throughput	O
and	O
low	O
latency	O
requirements	O
.	O
</s>
<s>
It	O
consists	O
of	O
an	O
in-memory	B-General_Concept
data	O
grid	O
and	O
a	O
distributed	O
stream	O
processing	O
engine	O
that	O
work	O
together	O
to	O
run	O
many	O
types	O
of	O
data	O
processing	O
workloads.Informix	O
Warehouse	O
AcceleratorIBMJDBC	O
,	O
SQLProprietaryIWA	O
supports	O
Dynamic	O
In-memory	B-General_Concept
(	O
in-memory	B-General_Concept
columnar	O
processing	O
)	O
Parallel	O
Vector	O
Processing	O
,	O
Actionable	O
Compression	O
,	O
and	O
Data	O
Skipping	O
technologies	O
,	O
collectively	O
called	O
"	O
Blink	O
Technology	O
"	O
by	O
IBM	O
(	O
the	O
same	O
technology	O
underlying	O
IBM	O
BLU	O
Acceleration	O
)	O
.	O
</s>
<s>
The	O
Informix	B-Application
Advanced	O
Enterprise	O
and	O
Advanced	O
Workgroup	O
Editions	O
include	O
IWA	O
.	O
</s>
<s>
Released	O
:	O
March	O
2011.IBM	O
Db2IBM1991ODBC	O
,	O
JDBC	O
,	O
C	B-Language
,	O
C++	B-Language
,	O
PythonProprietaryIBM	O
BLU	O
AccelerationInfinityDBBoiler	O
Bay	O
Inc.2002Java	O
,	O
HTTP	O
,	O
ProprietaryJava	O
extended	O
standard	O
ConcurrentNavigableMap	O
NoSQL	O
with	O
caching	O
,	O
durability	B-General_Concept
,	O
transactions	O
,	O
compression.KineticaKinetica	O
(	O
formerly	O
GIS	O
Federal	O
)	O
2014C++	O
,	O
C#	O
,	O
Java	O
,	O
JavaScript	O
,	O
Node.js	O
.	O
</s>
<s>
Python	O
,	O
HTTPProprietaryGPU-accelerated	O
,	O
in-memory	B-General_Concept
,	O
distributed	O
database	O
for	O
analytics	O
.	O
</s>
<s>
UDF	B-Language
framework	O
allows	O
for	O
custom	O
code	O
and	O
machine	O
learning	O
workloads	O
to	O
run	O
in-database	O
.	O
</s>
<s>
Received	O
$50mil	O
Series	O
A	O
funding	O
in	O
June	O
2017.MemcachedDanga	O
Interactive2003Proprietary	O
text	O
and	O
binary	O
protocols	O
in	O
any	O
languageOpen	O
Source	O
(	O
BSD	B-Operating_System
)	O
Hashtable	O
with	O
LRU	O
purgeSingleStore	O
(	O
formerly	O
MemSQL	B-Application
)	O
SingleStore	B-Application
,	O
Inc.ProprietarySQL	O
relationalMicrosoft	O
COM+	O
IMDBMicrosoft	O
CorporationProprietaryDefunctMicrosoft	O
SQL	O
ServerMicrosoft2012ProprietaryIn	O
SQL	O
Server	O
2014	O
,	O
a	B-Application
feature	I-Application
codenamed	I-Application
Hekaton	I-Application
,	I-Application
and	I-Application
named	I-Application
In	I-Application
Memory	I-Application
OLTP	I-Application
,	O
provided	O
limited	O
memory	O
optimization	O
,	O
which	O
can	O
be	O
used	O
in	O
conjunction	O
with	O
natively	O
compile	O
stored	O
procedures	O
which	O
are	O
persisted	O
as	O
C	B-Language
.	O
</s>
<s>
In	O
SQL	O
Server	O
2012	O
,	O
an	O
in-memory	B-General_Concept
technology	O
called	O
xVelocity	O
column-store	O
indexes	O
targeted	O
for	O
data-warehouse	O
workloads.Mimer	O
SQLMimer	O
Information	O
TechnologySQL	O
,	O
ODBC	B-Application
,	O
JDBC	O
,	O
ADO.NET	B-Device
,	O
Embedded	B-Language
SQL	I-Language
,	O
C	B-Language
,	O
C++	B-Language
,	O
PythonProprietaryMimer	O
SQL	O
is	O
a	O
general	O
purpose	O
relational	O
database	O
server	O
that	O
can	O
be	O
configured	O
to	O
run	O
fully	O
in-memory	B-General_Concept
.	O
</s>
<s>
Mimer	B-Application
SQL	I-Application
has	O
full	O
ACID	O
support	O
,	O
support	O
for	O
stored	O
procedures	O
and	O
is	O
the	O
only	O
database	O
that	O
has	O
a	O
full	O
score	O
on	O
SQL	O
complianceMnesiaEricsson2014Open	O
Source	O
Erlang	O
LicenseMnesia	O
is	O
a	O
distributed	O
,	O
soft	O
real-time	O
database	O
management	O
system	O
written	O
in	O
the	O
Erlang	O
programming	O
language	O
.	O
</s>
<s>
It	O
is	O
distributed	O
as	O
part	O
of	O
the	O
Open	O
Telecom	O
Platform.MonetDBMonetDB	O
Solutions	O
,	O
CWI2004SQL	O
,	O
ODBC	B-Application
,	O
JDBC	O
,	O
C	B-Language
,	O
C++	B-Language
,	O
Java	O
,	O
Python	O
,	O
PHP	O
,	O
Node.js	O
,	O
Perl	O
,	O
Ruby	O
,	O
R	O
,	O
MALopen-source	O
MonetDB	B-Application
License	O
,	O
based	O
on	O
MPL	B-License
2.0	I-License
as	O
of	O
version	O
Jul2015.in-memory	O
optimized	O
column-oriented	B-General_Concept
relational	B-Application
database	I-Application
management	I-Application
system	I-Application
(	O
RDBMS	O
)	O
written	O
in	O
C	B-Language
with	O
an	O
SQL	O
top-level	O
interface	O
and	O
ODBC	B-Application
,	O
JDBC	O
driversMySQL	O
NDB	O
ClusterMySQL1997Dual_license	O
open	O
source(GNU-GPLv2 )	O
and	O
optional	O
proprietaryHighly	O
available	O
distributed	O
real-time	O
in-memory	B-General_Concept
NoSQL	O
database	O
.	O
</s>
<s>
Often	O
used	O
with	O
MySQL	B-Application
for	O
SQL	O
cross-shard	O
parallel	O
query	O
processing.OmniSciOmniSci	O
(	O
formerly	O
MapD	O
)	O
2013Open	O
Source	O
(	O
Apache	O
License	O
2.0	O
)	O
GPU-accelerated	O
,	O
SQL	O
database	O
and	O
visualization	O
platform	O
for	O
real-time	O
analytics	O
.	O
</s>
<s>
Received	O
$55mil	O
Series	O
C	B-Language
funding	O
in	O
Aug	O
2018	O
.	O
v4.8	O
announced	O
in	O
August	O
2019	O
with	O
support	O
for	O
JupyterLab	O
.	O
</s>
<s>
Oracle	B-General_Concept
RDBMSOracle	O
Corporation	O
2014ProprietaryRDBMS	O
Oracle	B-General_Concept
12c	O
contains	O
an	O
option	O
for	O
in-memory	B-General_Concept
technology	O
(	O
additional	O
licenses	O
required	O
)	O
.Oracle	O
CoherenceOracle	O
CorporationProprietary	O
with	O
developer	O
downloadFor	O
Java	O
,	O
relational	O
,	O
distributedPerstMcObject	O
2006Java	O
,	O
Android	O
,	O
.NET[Dual_license]	O
open	O
source(GNU-GPLv3 )	O
and	O
optional	O
proprietaryObject-oriented	O
embedded	O
database	O
system	O
for	O
Java	O
,	O
Android	O
and	O
.NET	O
platforms	O
.	O
</s>
<s>
Schema	O
evolution	O
,	O
XML	O
export/import	O
,	O
replication	O
,	O
specialized	O
indexes	O
,	O
including	O
full	O
text	O
,	O
b-tree	O
,	O
t-tree	O
,	O
r-tree	O
,	O
patricia	O
trie	O
,	O
kd-tree	O
and	O
time	O
seriesPolyhedraENEA	O
AB	O
(	O
previously	O
Perihelion	O
Software	O
)	O
1993Proprietary	O
,	O
with	O
a	O
free-to-use	O
edition	O
(	O
Polyhedra	B-Application
Lite	O
)	O
Relational	O
(	O
SQL	O
,	O
ODBC	B-Application
,	O
JDBC	O
)	O
in-memory	B-General_Concept
database	I-General_Concept
system	I-General_Concept
originally	O
developed	O
for	O
use	O
in	O
SCADA	O
and	O
embedded	O
systems	O
,	O
but	O
used	O
in	O
a	O
variety	O
of	O
other	O
applications	O
including	O
financial	O
systems	O
.	O
</s>
<s>
Supports	O
data	O
durability	B-General_Concept
via	O
snapshots	O
and	O
journal	O
logging	O
,	O
and	O
high	O
availability	O
via	O
a	O
hot-standby	O
.	O
</s>
<s>
Polyhedra	B-Application
Lite	O
appeared	O
with	O
a	O
free-to-use	O
license	O
in	O
2012.RaimaRaima	O
Database	O
Manager	O
(	O
RDM	O
)	O
1982ProprietaryRaima	O
Database	O
Manager	O
(	O
RDM	O
)	O
is	O
an	O
In-memory	B-General_Concept
database	I-General_Concept
management	O
system	O
used	O
by	O
application	O
developers	O
.	O
</s>
<s>
It	O
has	O
multiple	O
interfaces	O
available	O
to	O
C	B-Language
,	O
C++	B-Language
,	O
C#	O
,	O
or	O
Java	O
programmers	O
.	O
</s>
<s>
RDM	O
supports	O
ODBC	B-Application
,	O
JDBC	O
,	O
SQL	O
and	O
SQL	O
PL	O
in	O
RDM	O
14.0	O
.	O
</s>
<s>
Redis	B-Operating_System
Redis	B-Operating_System
Labs	O
2009	O
C	B-Language
,	O
C++	B-Language
,	O
Python	O
,	O
Lua	O
,	O
C#	O
,	O
etc	O
.	O
</s>
<s>
redis	B-Operating_System
Client	O
Interfaces	O
Open	O
Source	O
(	O
BSD	B-Operating_System
)	O
Redis	B-Operating_System
is	O
an	O
open-source	B-Application
software	I-Application
project	O
that	O
implements	O
data	B-General_Concept
structure	I-General_Concept
servers	O
.	O
</s>
<s>
It	O
is	O
networked	O
,	O
in-memory	B-General_Concept
,	O
and	O
stores	B-Data_Structure
keys	I-Data_Structure
with	O
optional	O
durability.SafePeakSafePeak	O
TechnologiesProprietaryAutomated	O
In-Memory	B-General_Concept
Dynamic	O
Caching	O
for	O
SQL	O
Server	O
OLTP	O
applications	O
and	O
databases	O
.	O
</s>
<s>
Code-free	O
,	O
Dynamic	O
Caching	O
,	O
RelationalSAP	O
HANASAP	O
SE2012ProprietarySAP	O
HANA	O
,	O
short	O
for	O
'	O
High	O
Performance	O
Analytic	O
Appliance	O
 '	O
is	O
an	O
in-memory	B-General_Concept
,	O
column-oriented	B-General_Concept
,	O
relational	B-Application
database	I-Application
management	I-Application
system	I-Application
written	O
in	O
C	B-Language
,	O
C++solidDBUnicom	O
Global1992ProprietaryRelational	O
with	O
standard	O
SQL	O
support	O
.	O
</s>
<s>
ODBC	B-Application
and	O
JDBC	O
interfaces	O
.	O
</s>
<s>
Includes	O
in-memory	B-General_Concept
and	O
on-disk	O
tables	O
in	O
the	O
same	O
engine	O
.	O
</s>
<s>
ADO.NET	B-Device
,	O
OLE	B-Language
DB	I-Language
.	O
</s>
<s>
No	O
ODBC	B-Application
driver.SQLiteSQLiteOpen	O
Source	O
(	O
Public	O
domain	O
)	O
SQL	O
database	O
that	O
supports	O
in-memory	B-General_Concept
storage	O
with	O
the	O
:memory	O
:	O
connection	O
string.Tarantool	O
Mail.ru	O
Group2010Open	O
Source	O
(	O
BSD	B-Operating_System
)	O
In-memory	B-General_Concept
database	I-General_Concept
and	O
application	B-Application
server	I-Application
(	O
data	O
grid	O
)	O
TerminusDBTerminusDB	O
(	O
formerly	O
DataChemist	O
)	O
2019JavaScript	O
,	O
Python	O
,	O
Prolog	B-Language
,	O
Rust	O
,	O
JSON-LDOpen	O
Source	O
(	O
Apache	O
2.0	O
)	O
Open	O
source	O
in-memory	B-General_Concept
graph	O
database	O
designed	O
for	O
knowledge	O
graph	O
representationTimesTen	O
now	O
Oracle	B-General_Concept
Corporation1997Java	O
,	O
JDBC	O
,	O
ODBC	B-Application
,	O
SQL	O
,	O
PLSQL	O
,	O
CProprietaryStandalone	O
database	O
or	O
in-memory	B-General_Concept
cache	O
for	O
Oracle	B-General_Concept
DatabaseTPF	O
(	O
Transaction	B-Operating_System
Processing	I-Operating_System
Facility	I-Operating_System
)	O
IBM1979MarketedGeneralized	O
extension	O
of	O
IBM	B-Application
Airlines	I-Application
reservation	I-Application
system	I-Application
.	O
</s>
<s>
IBM	O
's	O
DB/DC	O
system	O
backed	O
up	O
the	O
in-memory	B-General_Concept
transaction	O
processing	O
computer.Siwiec	O
,	O
J.E.	O
</s>
