<s>
This	O
list	B-Application
of	I-Application
Apache	I-Application
Software	I-Application
Foundation	I-Application
projects	I-Application
contains	O
the	O
software	O
development	O
projects	O
of	O
the	O
Apache	B-Application
Software	O
Foundation	O
(	O
ASF	O
)	O
.	O
</s>
<s>
Besides	O
the	O
projects	O
,	O
there	O
are	O
a	O
few	O
other	O
distinct	O
areas	O
of	O
Apache	B-Application
:	O
</s>
<s>
ActiveMQ	B-Language
:	O
message	B-General_Concept
broker	I-General_Concept
supporting	O
different	O
communication	O
protocols	O
and	O
clients	O
,	O
including	O
a	O
full	O
Java	B-Language
Message	I-Language
Service	I-Language
(	O
JMS	O
)	O
1.1	O
client	O
.	O
</s>
<s>
Arrow	B-Application
:	O
"	O
A	O
high-performance	O
cross-system	O
data	O
layer	O
for	O
columnar	O
in-memory	O
analytics	O
"	O
.	O
</s>
<s>
Avro	B-Operating_System
:	O
a	O
data	O
serialization	O
system	O
.	O
</s>
<s>
Sandesha2	O
:	O
an	O
Axis2	B-Language
module	O
implementing	O
WS-RM	O
.	O
</s>
<s>
Bigtop	O
:	O
a	O
project	O
for	O
the	O
development	O
of	O
packaging	O
and	O
tests	O
of	O
the	O
Apache	B-Application
Hadoop	I-Application
ecosystem	O
.	O
</s>
<s>
Jelly	B-Language
:	O
Jelly	B-Language
is	O
a	O
Java	B-Language
and	O
XML	B-Protocol
based	O
scripting	O
engine	O
.	O
</s>
<s>
Directory	B-Application
:	O
LDAP	O
and	O
Kerberos	O
,	O
entirely	O
in	O
Java	B-Language
.	O
</s>
<s>
Flex	B-Operating_System
:	O
cross-platform	O
SDK	O
for	O
developing	O
and	O
deploying	O
rich	O
Internet	O
applications	O
.	O
</s>
<s>
Flink	B-Application
:	O
fast	O
and	O
reliable	O
large-scale	O
data	O
processing	O
engine	O
.	O
</s>
<s>
FreeMarker	B-Language
:	O
a	O
template	O
engine	O
,	O
i.e.	O
</s>
<s>
Griffin	O
:	O
an	O
open	B-Application
source	I-Application
Data	O
Quality	O
solution	O
for	O
Big	O
Data	O
,	O
which	O
supports	O
both	O
batch	O
and	O
streaming	O
mode	O
.	O
</s>
<s>
HBase	B-Language
:	O
Apache	B-Language
HBase	I-Language
software	O
is	O
the	O
Hadoop	B-Application
database	O
.	O
</s>
<s>
Hive	B-General_Concept
:	O
the	O
Apache	B-General_Concept
Hive	I-General_Concept
data	O
warehouse	O
software	O
facilitates	O
querying	O
and	O
managing	O
large	O
datasets	O
residing	O
in	O
distributed	O
storage	O
.	O
</s>
<s>
Hop	O
:	O
The	O
Hop	O
Orchestration	O
Platform	O
,	O
or	O
Apache	B-Application
Hop	O
,	O
aims	O
to	O
facilitate	O
all	O
aspects	O
of	O
data	O
and	O
metadata	O
orchestration	O
.	O
</s>
<s>
mod_python	O
:	O
module	O
that	O
integrates	O
the	O
Python	B-Language
interpreter	O
into	O
Apache	B-Application
server	I-Application
.	O
</s>
<s>
Iceberg	B-Language
:	O
an	O
open	O
standard	O
for	O
analytic	O
SQL	B-Language
tables	O
,	O
designed	O
for	O
high	O
performance	O
and	O
ease	O
of	O
use	O
.	O
</s>
<s>
:	O
Apache	B-Application
Scout	O
is	O
an	O
implementation	O
of	O
the	O
JSR	O
93	O
(	O
JAXR	O
)	O
.	O
</s>
<s>
Karaf	O
:	O
an	O
OSGi	B-Application
distribution	O
for	O
server-side	O
applications	O
.	O
</s>
<s>
Libcloud	O
:	O
a	O
standard	O
Python	B-Language
library	O
that	O
abstracts	O
away	O
differences	O
among	O
multiple	O
cloud	O
provider	O
APIs	O
.	O
</s>
<s>
Chainsaw	B-Language
:	O
a	O
GUI	O
log	O
viewer	O
.	O
</s>
<s>
Log4cxx	O
:	O
provides	O
logging	B-Language
services	O
for	O
C++	B-Language
.	O
</s>
<s>
Log4net	O
:	O
provides	O
logging	B-Language
services	O
for	O
.NET	O
.	O
</s>
<s>
Log4php	O
:	O
a	O
logging	B-Language
framework	O
for	O
PHP	O
.	O
</s>
<s>
Lucene.NET	O
:	O
a	O
port	O
of	O
the	O
Lucene	B-Language
search	O
engine	O
library	O
,	O
written	O
in	O
C#	O
and	O
targeted	O
at	O
.NET	O
runtime	O
users	O
.	O
</s>
<s>
Mahout	B-Application
:	O
machine	O
learning	O
and	O
data	O
mining	O
solution	O
.	O
</s>
<s>
Doxia	B-Protocol
:	O
a	O
content	O
generation	O
framework	O
,	O
which	O
supports	O
many	O
markup	O
languages	O
.	O
</s>
<s>
MINA	B-Language
:	O
Multipurpose	O
Infrastructure	O
for	O
Network	O
Application	O
,	O
a	O
framework	O
to	O
develop	O
high	O
performance	O
and	O
high	O
scalability	O
network	O
applications	O
.	O
</s>
<s>
Oozie	B-Language
:	O
a	O
workflow	O
scheduler	O
system	O
to	O
manage	O
Apache	B-Application
Hadoop	I-Application
jobs	O
.	O
</s>
<s>
Storm	B-General_Concept
:	O
a	O
distributed	O
real-time	O
computation	O
system	O
.	O
</s>
<s>
Syncope	O
:	O
an	O
Open	B-Application
Source	I-Application
system	O
for	O
managing	O
digital	O
identities	O
in	O
enterprise	O
environments	O
.	O
</s>
<s>
Traffic	O
Control	O
:	O
Built	O
around	O
Apache	B-Language
Traffic	I-Language
Server	I-Language
as	O
the	O
caching	O
software	O
,	O
Traffic	O
Control	O
implements	O
all	O
the	O
core	O
functions	O
of	O
a	O
modern	O
CDN	O
.	O
</s>
<s>
Traffic	B-Language
Server	I-Language
:	O
HTTP/1.1	B-Protocol
compliant	O
caching	O
proxy	O
server	O
.	O
</s>
<s>
Apache	B-Language
Velocity	I-Language
Committee	O
:	O
</s>
<s>
Anakia	O
:	O
an	O
XML	B-Protocol
transformation	O
tool	O
which	O
uses	O
JDOM	O
and	O
Velocity	B-Language
to	O
transform	O
XML	B-Protocol
documents	I-Protocol
into	O
multiple	O
formats	O
.	O
</s>
<s>
Texen	O
:	O
a	O
general	O
purpose	O
text	O
generating	O
utility	O
based	O
on	O
Apache	B-Language
Velocity	I-Language
and	O
Apache	B-Application
Ant	I-Application
.	O
</s>
<s>
Apache	B-Language
Velocity	I-Language
DVSL	O
:	O
a	O
tool	O
modeled	O
after	O
XSLT	O
and	O
intended	O
for	O
general	O
XML	B-Protocol
transformations	O
using	O
the	O
Velocity	B-Language
Template	O
Language	O
.	O
</s>
<s>
Axiom	O
:	O
an	O
XML	B-Protocol
object	O
model	O
supporting	O
deferred	O
parsing	O
.	O
</s>
<s>
Woden	O
:	O
used	O
to	O
develop	O
a	O
Java	B-Language
class	O
library	O
for	O
reading	O
,	O
manipulating	O
,	O
creating	O
and	O
writing	O
WSDL	O
documents	O
.	O
</s>
<s>
to	O
easily	O
connect	O
to	O
various	O
underlying	O
engines	O
(	O
Spark	B-Language
,	O
Presto	O
,	O
Flink	B-Application
,	O
etc	O
.	O
)	O
</s>
<s>
It	O
is	O
no	O
longer	O
developed	O
at	O
the	O
Apache	B-Application
Software	O
Foundation	O
and	O
does	O
not	O
have	O
any	O
other	O
duties	O
.	O
</s>
<s>
AxKit	O
:	O
XML	B-Protocol
Application	O
Server	O
for	O
Apache	B-Application
.	O
</s>
<s>
ODE	B-Application
:	O
Apache	B-Application
ODE	I-Application
is	O
a	O
WS-BPEL	O
implementation	O
that	O
supports	O
web	O
services	O
orchestration	O
using	O
flexible	O
process	O
definitions	O
.	O
</s>
<s>
PredictionIO	O
:	O
PredictionIO	O
is	O
an	O
open	B-Application
source	I-Application
Machine	O
Learning	O
Server	O
built	O
on	O
top	O
of	O
state-of-the-art	O
open	B-Application
source	I-Application
stack	O
,	O
that	O
enables	O
developers	O
to	O
manage	O
and	O
deploy	O
production-ready	O
predictive	O
services	O
for	O
various	O
kinds	O
of	O
machine	O
learning	O
tasks	O
.	O
</s>
<s>
It	O
using	O
the	O
hadoop	B-Application
file	O
system	O
as	O
distributed	O
storage	O
.	O
</s>
<s>
Tiles	B-Language
:	O
templating	O
framework	O
built	O
to	O
simplify	O
the	O
development	O
of	O
web	O
application	O
user	O
interfaces	O
.	O
</s>
<s>
VXQuery	B-Application
:	O
Apache	B-Application
VXQuery	I-Application
implements	O
a	O
parallel	O
XML	B-Protocol
Query	O
processor	O
.	O
</s>
