<s>
Journler	B-Operating_System
was	O
an	O
open-source	B-Application
hybrid	O
diary	O
and	O
personal	B-Application
information	I-Application
manager	I-Application
for	O
Macintosh	B-Device
.	O
</s>
<s>
The	O
entries	O
could	O
be	O
rich	O
text	O
,	O
but	O
also	O
could	O
contain	O
images	O
,	O
PDFs	B-Application
,	O
and	O
other	O
media	O
that	O
macOS	B-Application
supports	O
.	O
</s>
<s>
Like	O
many	O
recent	O
OS	B-Application
X	I-Application
applications	O
,	O
Journler	B-Operating_System
supported	O
smart	O
folders	O
that	O
can	O
automatically	O
update	O
themselves	O
based	O
on	O
some	O
user-delimited	O
criteria	O
.	O
</s>
<s>
Journler	B-Operating_System
allowed	O
nesting	O
of	O
folders	O
,	O
including	O
smart	O
folders	O
,	O
under	O
one	O
another	O
,	O
which	O
is	O
more	O
unusual	O
.	O
</s>
<s>
Its	O
support	O
for	O
easy	O
creation	O
of	O
hyperlinks	O
between	O
entries	O
,	O
with	O
automatic	O
backlinks	O
,	O
allowed	O
it	O
to	O
be	O
used	O
as	O
a	O
personal	B-Protocol
wiki	I-Protocol
.	O
</s>
<s>
Journler	B-Operating_System
was	O
originally	O
created	O
by	O
Philip	O
Dow	O
to	O
meet	O
his	O
own	O
needs	O
.	O
</s>
<s>
In	O
September	O
2009	O
,	O
Dow	O
announced	O
he	O
would	O
cease	O
development	O
on	O
Journler	B-Operating_System
.	O
</s>
<s>
In	O
February	O
2011	O
,	O
it	O
was	O
announced	O
that	O
Journler	B-Operating_System
would	O
be	O
open	O
sourced	O
.	O
</s>
<s>
The	O
source	O
code	O
is	O
currently	O
hosted	O
on	O
GitHub	B-Application
.	O
</s>
<s>
In	O
August	O
2015	O
,	O
Journler	B-Operating_System
's	O
creator	O
wrote	O
an	O
article	O
citing	O
Howard	O
Rheingold	O
's	O
1985	O
book	O
Tools	O
for	O
Thought	O
and	O
John	O
Markoff	O
's	O
2005	O
book	O
What	O
the	O
Dormouse	O
Said	O
,	O
and	O
explaining	O
how	O
he	O
has	O
come	O
to	O
understand	O
Journler	B-Operating_System
as	O
a	O
"	O
tool	O
for	O
thought	O
"	O
in	O
a	O
tradition	O
of	O
computer-assisted	O
intelligence	O
augmentation	O
dating	O
back	O
to	O
computer	O
science	O
pioneers	O
Vannevar	O
Bush	O
,	O
J	O
.	O
C	O
.	O
R	O
.	O
Licklider	O
,	O
and	O
Douglas	O
Engelbart	O
.	O
</s>
