<s>
While	O
the	O
1541	O
disk	O
drive	O
's	O
slow	O
performance	O
made	O
the	O
Commodore	O
64	O
mostly	O
unsuitable	O
as	O
a	O
business	O
computer	O
,	O
it	O
was	O
still	O
widely	O
used	O
for	O
many	O
important	O
tasks	O
,	O
including	O
computer	O
graphics	O
creation	O
,	O
desktop	O
publishing	O
,	O
and	O
word	B-General_Concept
processing	I-General_Concept
.	O
</s>
<s>
The	O
best	O
known	O
art	O
package	O
was	O
perhaps	O
KoalaPainter	B-Application
,	O
primarily	O
because	O
of	O
its	O
own	O
custom	O
graphics	B-Device
tablet	I-Device
user	O
interface	O
-	O
the	O
KoalaPad	B-Application
.	O
</s>
<s>
A	O
Commodore	O
64	O
version	O
of	O
The	B-Application
Print	I-Application
Shop	I-Application
existed	O
,	O
allowing	O
users	O
to	O
generate	O
signs	O
and	O
banners	O
with	O
a	O
printer	O
.	O
</s>
<s>
Lightpens	B-Device
and	O
CAD	B-Application
drawing	O
software	O
were	O
also	O
commercially	O
produced	O
,	O
such	O
as	O
the	O
Inkwell	O
Lightpen	B-Device
and	O
related	O
tools	O
.	O
</s>
<s>
There	O
were	O
many	O
prepackaged	O
wordprocessors	B-General_Concept
available	O
for	O
the	O
Commodore	O
64	O
,	O
such	O
as	O
PaperClip	B-Protocol
and	O
Vizawrite	O
,	O
but	O
a	O
popular	O
DIY	O
program	O
was	O
SpeedScript	B-Device
,	O
which	O
was	O
available	O
as	O
a	O
type-in	O
program	O
from	O
Compute	O
!	O
</s>
<s>
The	O
MultiPlan	B-Device
spreadsheet	B-Application
application	O
from	O
Microsoft	O
was	O
ported	O
to	O
the	O
Commodore	O
64	O
,	O
where	O
it	O
competed	O
against	O
established	O
packages	O
such	O
as	O
Calc	O
Result	O
.	O
</s>
<s>
The	O
first	O
Lotus	O
1-2-3-like	O
integrated	B-Application
software	I-Application
package	O
for	O
the	O
64	O
was	O
Viza	O
Software	O
's	O
Vizastar	B-Device
.	O
</s>
<s>
A	O
complete	O
office	O
suite	O
arrived	O
in	O
the	O
form	O
of	O
British	O
made	O
Mini	B-Application
Office	I-Application
II	I-Application
.	O
</s>
<s>
The	O
typical	O
C64	O
spreadsheet	B-Application
could	O
store	O
64	O
columns	O
and	O
255	O
rows	O
,	O
or	O
16,000	O
cells	O
,	O
but	O
only	O
5-10	O
%	O
of	O
them	O
could	O
be	O
used	O
at	O
any	O
one	O
time	O
,	O
due	O
to	O
RAM	O
limitations	O
.	O
</s>
<s>
Serious	O
Commodore	O
64	O
business	O
users	O
,	O
however	O
,	O
were	O
drawn	O
to	O
GEOS	B-Device
.	O
</s>
<s>
Due	O
to	O
its	O
speed	O
,	O
ease	O
of	O
use	O
,	O
and	O
full	O
suite	O
of	O
office	O
applications	O
and	O
utility	O
software	O
,	O
GEOS	B-Device
provided	O
a	O
work	O
environment	O
similar	O
to	O
that	O
of	O
an	O
early	O
Apple	B-Device
Macintosh	I-Device
.	O
</s>
<s>
Arguably	O
the	O
best	O
office	O
applications	O
appeared	O
on	O
GEOS	B-Device
because	O
it	O
was	O
graphically	O
advanced	O
and	O
not	O
limited	O
by	O
the	O
Commodore	O
64	O
's	O
screen	O
area	O
of	O
40-columns	O
.	O
</s>
<s>
Being	O
a	O
fully-fledged	O
OS	B-General_Concept
,	O
GEOS	B-Device
brought	O
the	O
arrival	O
of	O
many	O
add-on	O
fonts	O
,	O
accessories	O
,	O
and	O
applications	O
.	O
</s>
<s>
KoalaPad	B-Application
and	O
Lightpen	B-Device
users	O
could	O
use	O
GEOS	B-Device
too	O
,	O
which	O
greatly	O
increased	O
the	O
amount	O
of	O
clip	O
art	O
available	O
for	O
the	O
platform	O
.	O
</s>
<s>
GEOS	B-Device
proved	O
very	O
popular	O
because	O
of	O
low	O
price	O
for	O
the	O
necessary	O
hardware	O
(	O
and	O
of	O
course	O
the	O
capability	O
of	O
the	O
OS	B-General_Concept
)	O
.	O
</s>
<s>
This	O
was	O
in	O
comparison	O
to	O
a	O
typical	O
PC	O
for	O
US$2000	O
(	O
which	O
required	O
MS-DOS	B-Application
,	O
and	O
another	O
$99	O
for	O
Windows	B-Application
1.0	I-Application
)	O
or	O
the	O
venerable	O
Mac	B-Device
512K	O
Enhanced	O
also	O
$2000	O
.	O
</s>
<s>
Software	O
titles	O
such	O
as	O
the	O
Music	B-Device
Construction	I-Device
Set	I-Device
were	O
available	O
for	O
users	O
to	O
compose	O
music	O
with	O
notes	O
;	O
however	O
,	O
the	O
tools	O
which	O
maximized	O
the	O
C64	O
's	O
sonic	B-Application
capability	O
were	O
demoscene	O
music	O
tools	O
or	O
pure	O
assembly	B-Language
language	I-Language
.	O
</s>
<s>
MIDI	O
expansion	O
cartridges	B-Protocol
and	O
speech-synthesizing	O
hardware	O
was	O
also	O
available	O
for	O
more	O
serious	O
musicians	O
.	O
</s>
<s>
The	O
Prophet64	O
cartridge	B-Protocol
was	O
recently	O
released	O
and	O
features	O
a	O
suite	O
of	O
GUI-style	O
applications	O
for	O
sequencing	O
music	O
,	O
drum	O
and	O
rhythm	O
synthesis	O
,	O
MIDI	O
DIN-sync	O
,	O
and	O
taking	O
advantage	O
of	O
the	O
SID	O
chip	O
in	O
other	O
ways	O
,	O
effectively	O
turning	O
the	O
C64	O
into	O
a	O
true	O
musical	B-Application
instrument	O
that	O
anyone	O
can	O
use	O
.	O
</s>
<s>
There	O
was	O
also	O
software	O
which	O
could	O
be	O
used	O
to	O
make	O
the	O
Commodore	O
64	O
speak	O
,	O
the	O
best-known	O
being	O
SAM	B-Application
.	O
</s>
<s>
The	O
first	O
screen	O
shows	O
the	O
C64	O
's	O
BASIC	B-Language
with	O
a	O
small	O
program	O
.	O
</s>
<s>
The	O
BASIC	B-Language
interpreter	O
not	O
only	O
allows	O
the	O
user	O
to	O
write	O
programs	O
,	O
but	O
it	O
is	O
also	O
used	O
as	O
command	O
prompt	O
,	O
so	O
in	O
order	O
to	O
load	O
a	O
program	O
a	O
BASIC	B-Language
command	O
needs	O
to	O
be	O
entered	O
.	O
</s>
<s>
KoalaPainter	B-Application
is	O
an	O
early	O
paint	B-Application
program	I-Application
.	O
</s>
<s>
The	O
program	O
is	O
controlled	O
either	O
by	O
a	O
joystick	B-Device
or	O
with	O
a	O
KoalaPad	B-Application
graphics	B-Device
tablet	I-Device
(	O
that	O
was	O
also	O
sold	O
by	O
Koala	O
)	O
.	O
</s>
<s>
Magic	O
Desk	O
is	O
an	O
application	O
by	O
Commodore	O
that	O
resembles	O
a	O
real	O
typewriter	O
but	O
contains	O
basic	B-Language
editing	O
functions	O
.	O
</s>
<s>
Multiplan	B-Device
is	O
a	O
text-based	O
spreadsheet	B-Application
application	O
written	O
by	O
Microsoft	O
.	O
</s>
<s>
Vizawrite	O
is	O
another	O
text-based	O
word	B-General_Concept
processor	I-General_Concept
for	O
the	O
C64	O
,	O
but	O
it	O
looks	O
more	O
like	O
the	O
professional	O
word	B-General_Concept
processors	I-General_Concept
of	O
the	O
early	O
80s	O
.	O
</s>
<s>
GEOS	B-Device
was	O
a	O
graphical	B-Application
user	I-Application
interface	I-Application
,	O
first	O
released	O
in	O
1987	O
.	O
</s>
<s>
It	O
was	O
a	O
small	O
revolution	O
at	O
its	O
time	O
because	O
until	O
then	O
GUIs	B-Application
,	O
other	O
than	O
Apple	O
II	O
Desktop/MouseDesk	O
,	O
were	O
available	O
mostly	O
for	O
the	O
much	O
more	O
powerful	O
16-bit	O
machines	O
.	O
</s>
<s>
geoPaint	O
is	O
a	O
paint	B-Application
program	I-Application
for	O
GEOS	B-Device
.	O
</s>
<s>
Despite	O
its	O
lower	O
resolution	O
it	O
had	O
all	O
the	O
capabilities	O
of	O
other	O
GUI-based	O
drawing	O
programs	O
of	O
its	O
time	O
.	O
</s>
<s>
geoWrite	O
is	O
a	O
word	B-General_Concept
processor	I-General_Concept
for	O
GEOS	B-Device
.	O
</s>
<s>
It	O
had	O
a	O
GUI	B-Application
and	O
supported	O
many	O
different	O
styles	O
and	O
fonts	O
with	O
the	O
WYSIWYG	B-Application
principle	O
,	O
unlike	O
the	O
other	O
word	B-General_Concept
processors	I-General_Concept
on	O
the	O
C64	O
.	O
</s>
<s>
UIFLI	B-Device
(	O
Underlay	O
Interlace	O
Flexible	O
Line	O
Interpreter	O
)	O
is	O
a	O
graphics	O
mode	O
on	O
the	O
Commodore	O
64	O
invented	O
by	O
DeeKay	O
and	O
Crossbow	O
of	O
Crest	O
in	O
1995	O
.	O
</s>
<s>
By	O
1985	O
,	O
games	O
were	O
estimated	O
to	O
make	O
up	O
60	O
to	O
70%	O
of	O
Commodore	B-Device
64	I-Device
software	I-Device
.	O
</s>
<s>
International	B-Application
Soccer	I-Application
was	O
Commodore	O
's	O
best	O
first-party	O
game	O
;	O
otherwise	O
"	O
the	O
normal	O
standard	O
for	O
Commodore	O
software	O
is	O
mediocrity	O
"	O
,	O
InfoWorld	O
stated	O
in	O
1984	B-Application
.	O
</s>
<s>
The	O
company	O
did	O
not	O
publish	O
many	O
other	O
games	O
for	O
the	O
C64	O
,	O
instead	O
releasing	O
game	B-Protocol
cartridges	I-Protocol
primarily	O
from	O
the	O
failed	O
MAX	O
Machine	O
for	O
the	O
C64	O
.	O
</s>
<s>
However	O
,	O
aside	O
from	O
the	O
initial	O
Commodore	O
cartridges	B-Protocol
,	O
very	O
few	O
cartridge-based	B-Protocol
games	I-Protocol
were	O
released	O
for	O
the	O
Commodore	O
.	O
</s>
<s>
Most	O
third-party	O
game	B-Protocol
cartridges	I-Protocol
came	O
from	O
Llamasoft	O
,	O
Activision	O
,	O
and	O
Atarisoft	O
,	O
however	O
some	O
of	O
these	O
games	O
found	O
their	O
way	O
into	O
disk	O
and	O
tape	O
versions	O
too	O
.	O
</s>
<s>
Only	O
later	O
,	O
when	O
the	O
failed	O
C64GS	B-General_Concept
console	O
was	O
produced	O
,	O
did	O
cartridges	B-Protocol
make	O
a	O
brief	O
comeback	O
,	O
including	O
the	O
production	O
of	O
a	O
few	O
more	O
cartridge-only	O
games	O
.	O
</s>
<s>
Crackers	B-Application
managed	O
to	O
port	O
these	O
games	O
to	O
disk	O
later	O
on	O
.	O
</s>
<s>
Cassette-based	O
games	O
were	O
usually	O
cheaper	O
than	O
their	O
disk-based	O
counterparts	O
;	O
however	O
,	O
due	O
to	O
the	O
Datasette	B-Device
's	O
lack	O
of	O
speed	O
and	O
random	O
access	O
,	O
many	O
large	O
games	O
(	O
such	O
as	O
role-playing	O
video	O
games	O
)	O
were	O
never	O
made	O
for	O
the	O
cassette	O
format	O
.	O
</s>
<s>
Boulder	B-Application
Dash	I-Application
Construction	I-Application
Kit	I-Application
,	O
Pinball	B-Application
Construction	I-Application
Set	I-Application
,	O
SEUCK	B-Application
,	O
The	B-Application
Quill	I-Application
,	O
GameMaker	B-Application
.	O
</s>
<s>
Given	O
the	O
accessibility	O
of	O
BASIC	B-Language
on	O
the	O
Commodore	O
64	O
,	O
many	O
BASIC	B-Language
games	O
were	O
created	O
and	O
also	O
ported	O
from	O
other	O
computer	O
platforms	O
and	O
modified	O
for	O
the	O
Commodore	O
64	O
.	O
</s>
<s>
Many	O
books	O
and	O
magazines	O
were	O
published	O
containing	O
listings	O
for	O
games	O
,	O
and	O
public	B-Application
domain	I-Application
software	I-Application
was	O
developed	O
and	O
released	O
from	O
both	O
BBS	O
systems	O
and	O
public	O
domain	O
libraries	O
such	O
as	O
"	O
Binary	O
Zone	O
"	O
in	O
the	O
UK	O
.	O
</s>
<s>
Of	O
particular	O
note	O
,	O
the	O
smash	O
hit	O
Impossible	B-Application
Mission	I-Application
produced	O
by	O
Epyx	O
was	O
originally	O
designed	O
for	O
the	O
Commodore	O
64	O
.	O
</s>
<s>
Epyx	O
's	O
multievent	O
games	O
(	O
Summer	B-Application
Games	I-Application
,	O
Winter	B-Device
Games	I-Device
,	O
World	B-Device
Games	I-Device
,	O
and	O
California	B-Device
Games	I-Device
)	O
were	O
very	O
popular	O
,	O
as	O
well	O
as	O
perhaps	O
the	O
first	O
driving	O
game	O
with	O
split-screen	O
dynamics	O
,	O
Pitstop	B-Application
II	I-Application
.	O
</s>
<s>
Most	O
of	O
these	O
games	O
eventually	O
made	O
an	O
appearance	O
on	O
the	O
Commodore	O
DTV	B-Device
joystick	B-Device
unit	O
many	O
years	O
later	O
.	O
</s>
<s>
Other	O
hit	O
games	O
such	O
as	O
Boulder	O
Dash	O
,	O
The	B-Application
Sentinel	I-Application
,	O
Archon	B-Application
,	O
and	O
Elite	B-Application
were	O
all	O
given	O
Commodore	O
64	O
versions	O
.	O
</s>
<s>
Cassette	O
users	O
may	O
remember	O
titles	O
such	O
as	O
Master	B-Application
of	I-Application
Magic	I-Application
,	O
Rocketball	B-Application
,	O
One	B-Application
Man	I-Application
and	I-Application
His	I-Application
Droid	I-Application
,	O
and	O
Spellbound	B-Application
on	O
Mastertronic	O
's	O
budget	O
labels	O
.	O
</s>
<s>
Other	O
notable	O
titles	O
on	O
the	O
Commodore	O
64	O
include	O
the	O
Ultima	O
and	O
Bard	B-Device
's	I-Device
Tale	I-Device
role-playing	O
game	O
series	O
.	O
</s>
<s>
Hewson/Graftgold	O
were	O
responsible	O
for	O
several	O
well-received	O
C64	O
titles	O
including	O
Paradroid	B-Application
and	O
Uridium	B-Device
—	O
made	O
famous	O
for	O
their	O
metallic	O
bas-relief	O
styled	O
graphic	O
effects	O
and	O
addictive	O
gameplay	O
.	O
</s>
<s>
System	O
3	O
produced	O
The	B-Application
Last	I-Application
Ninja	I-Application
action	O
adventure	O
series	O
originally	O
on	O
the	O
C64	O
.	O
</s>
<s>
Armalyte	B-Application
,	O
a	O
groundbreaking	O
shoot	O
'	O
em	O
up	O
title	O
from	O
Thalamus	O
Ltd	O
,	O
and	O
Turrican	B-Application
I	I-Application
&	I-Application
II	I-Application
are	O
among	O
some	O
of	O
the	O
highest	O
rated	O
games	O
for	O
the	O
Commodore	O
64	O
(	O
according	O
to	O
Zzap64	O
,	O
which	O
awarded	O
"	O
Gold	O
Medals	O
"	O
to	O
these	O
games	O
)	O
.	O
</s>
<s>
The	O
game	O
,	O
titled	O
Mayhem	B-Application
in	I-Application
Monsterland	I-Application
,	O
was	O
developed	O
to	O
exploit	O
a	O
multitude	O
of	O
programming	O
tricks	O
and	O
quirks	O
in	O
the	O
Commodore	O
64	O
's	O
hardware	O
to	O
the	O
maximum	O
.	O
</s>
<s>
The	O
gameplay	O
itself	O
is	O
similar	O
to	O
that	O
of	O
Nintendo	O
's	O
Super	B-Application
Mario	I-Application
Bros	I-Application
.	I-Application
and	O
SEGA	O
's	O
Sonic	B-Application
the	I-Application
Hedgehog	I-Application
.	O
</s>
<s>
Commodore	O
64	O
games	O
continue	O
to	O
inspire	O
developers	O
and	O
gamers	O
on	O
modern	O
platforms	O
such	O
as	O
iOS	B-Operating_System
with	O
many	O
games	O
being	O
produced	O
using	O
similar	O
styles	O
of	O
game-play	O
mechanics	O
to	O
those	O
from	O
the	O
Commodore	O
64	O
era	O
.	O
</s>
<s>
Numerous	O
computer	O
magazines	O
offered	O
type-in	O
programs	O
,	O
usually	O
written	O
in	O
BASIC	B-Language
or	O
assembly	B-Language
language	I-Language
or	O
a	O
combination	O
of	O
the	O
two	O
.	O
</s>
<s>
A	O
large	O
library	O
of	O
public	O
domain	O
and	O
freeware	B-License
programs	O
,	O
distributed	O
by	O
online	O
services	O
such	O
as	O
Q-Link	O
and	O
CompuServe	O
,	O
BBSs	B-Application
,	O
and	O
user	O
groups	O
also	O
emerged	O
.	O
</s>
<s>
Commodore	O
also	O
maintained	O
an	O
archive	O
of	O
public	B-Application
domain	I-Application
software	I-Application
,	O
which	O
it	O
offered	O
for	O
sale	O
on	O
diskette	O
.	O
</s>
<s>
Some	O
of	O
the	O
most	O
popular	O
installations	O
included	O
the	O
highly	O
optimized	O
and	O
fast	O
Blue	B-Protocol
Board	I-Protocol
program	O
,	O
and	O
the	O
Color64	B-Protocol
BBS	O
System	O
,	O
which	O
allowed	O
the	O
use	O
of	O
color	O
PETSCII	B-Protocol
graphics	O
.	O
</s>
<s>
Many	O
BBS	O
sysops	O
used	O
high-capacity	O
floppy	O
drives	O
like	O
the	O
SFD-1001	B-Device
or	O
hard	O
drives	O
such	O
as	O
the	O
Lt	B-Device
.	I-Device
Kernal	I-Device
.	O
</s>
<s>
There	O
were	O
many	O
kinds	O
of	O
copy	O
protection	O
systems	O
,	O
employed	O
on	O
both	O
cassette	O
and	O
floppy	O
disk	O
,	O
to	O
prevent	O
the	O
unauthorized	O
copying	O
of	O
commercial	O
Commodore	B-Device
64	I-Device
software	I-Device
.	O
</s>
<s>
Practically	O
all	O
of	O
them	O
were	O
worked	O
around	O
or	O
defeated	O
by	O
crackers	B-Application
and	O
warez	B-Application
groups	I-Application
.	O
</s>
<s>
Many	O
BBSs	B-Application
offered	O
cracked	O
commercial	O
software	O
,	O
sometimes	O
requiring	O
special	O
access	O
and	O
usually	O
requiring	O
users	O
to	O
maintain	O
an	O
upload/download	O
ratio	O
.	O
</s>
<s>
A	O
large	O
number	O
of	O
warez	B-Application
groups	I-Application
existed	O
,	O
including	O
Fairlight	O
,	O
which	O
continued	O
to	O
exist	O
more	O
than	O
a	O
decade	O
after	O
the	O
C64	O
's	O
demise	O
.	O
</s>
<s>
For	O
these	O
people	O
,	O
many	O
warez	B-Application
group	I-Application
"	O
swappers	O
"	O
maintained	O
contacts	O
throughout	O
the	O
world	O
.	O
</s>
<s>
Tapes	O
could	O
be	O
copied	O
with	O
special	O
software	O
,	O
but	O
often	O
it	O
was	O
simply	O
done	O
by	O
dubbing	O
the	O
cassette	O
in	O
a	O
dual-deck	O
tape	O
recorder	O
or	O
by	O
relying	O
on	O
an	O
Action	B-Device
Replay	I-Device
cartridge	B-Protocol
to	O
freeze	O
the	O
program	O
in	O
memory	O
and	O
save	O
to	O
cassette	O
.	O
</s>
<s>
In	O
Europe	O
,	O
some	O
hardware	O
devices	O
,	O
colloquially	O
known	O
as	O
"	O
black	O
boxes	O
"	O
,	O
were	O
available	O
under	O
the	O
counter	O
;	O
these	O
connected	O
two	O
C1530	B-Device
tape	O
decks	O
together	O
at	O
the	O
C64	O
's	O
connection	O
point	O
,	O
permitting	O
a	O
copy	O
to	O
be	O
made	O
whilst	O
loading	O
a	O
game	O
.	O
</s>
<s>
Like	O
most	O
computers	O
from	O
the	O
late	O
1970s	O
and	O
1980s	O
,	O
the	O
Commodore	O
64	O
came	O
with	O
a	O
version	O
of	O
the	O
BASIC	B-Language
programming	I-Language
language	I-Language
.	O
</s>
<s>
It	O
was	O
used	O
for	O
both	O
writing	O
software	O
and	O
for	O
performing	O
the	O
duties	O
of	O
an	O
operating	B-General_Concept
system	I-General_Concept
such	O
as	O
loading	O
software	O
and	O
formatting	O
disks	O
.	O
</s>
<s>
The	O
onboard	O
BASIC	B-Language
programming	I-Language
language	I-Language
offered	O
no	O
easy	O
way	O
to	O
tap	O
the	O
machine	O
's	O
advanced	O
graphics	O
and	O
sound	O
capabilities	O
.	O
</s>
<s>
Accessing	O
these	O
associated	O
memory	O
addresses	O
to	O
make	O
use	O
of	O
the	O
advanced	O
features	O
required	O
using	O
the	O
PEEK	B-Language
and	I-Language
POKE	I-Language
commands	O
,	O
third-party	O
BASIC	B-Language
extensions	O
,	O
such	O
as	O
Simons	B-Language
 '	I-Language
BASIC	I-Language
,	O
or	O
to	O
program	O
in	O
assembly	B-Language
language	I-Language
.	O
</s>
<s>
Commodore	O
had	O
a	O
better	O
implementation	O
of	O
BASIC	B-Language
but	O
chose	O
to	O
ship	O
the	O
C64	O
with	O
the	O
same	O
BASIC	B-Language
2.0	I-Language
used	O
in	O
the	O
VIC-20	B-Device
to	O
minimize	O
cost	O
.	O
</s>
<s>
This	O
,	O
however	O
,	O
did	O
not	O
stop	O
countless	O
people	O
making	O
thousands	O
of	O
programs	O
in	O
the	O
BASIC	B-Language
V2	O
language	O
,	O
and	O
teaching	O
people	O
their	O
first	O
steps	O
in	O
computer	O
programming	O
.	O
</s>
<s>
One	O
musical	B-Application
software	B-Application
tool	I-Application
for	O
the	O
C64	O
was	O
Kawasaki	B-Application
Synthesizer	I-Application
,	O
created	O
in	O
1983	O
.	O
</s>
<s>
Aside	O
from	O
games	O
and	O
office	O
applications	O
such	O
as	O
word	B-General_Concept
processors	I-General_Concept
,	O
spreadsheets	B-Application
,	O
and	O
database	O
programs	O
,	O
the	O
C64	O
was	O
well	O
equipped	O
with	O
development	O
tools	O
from	O
Commodore	O
as	O
well	O
as	O
third-party	O
vendors	O
.	O
</s>
<s>
Various	O
assembler	B-Language
solutions	O
were	O
available	O
;	O
the	O
MIKRO	O
assembler	B-Language
came	O
in	O
ROM	B-Protocol
cartridge	I-Protocol
form	O
and	O
integrated	O
seamlessly	O
with	O
the	O
standard	O
BASIC	B-Language
screen	O
editor	O
.	O
</s>
<s>
The	O
PAL	O
Assembler	B-Language
by	O
Brad	O
Templeton	O
was	O
also	O
popular	O
.	O
</s>
<s>
Several	O
companies	O
sold	O
BASIC	B-Language
compilers	B-Language
,	O
C	O
compilers	B-Language
and	O
Pascal	O
compilers	B-Language
,	O
and	O
a	O
subset	O
of	O
Ada	B-Language
,	O
to	O
mention	O
but	O
a	O
few	O
popular	O
languages	O
available	O
for	O
the	O
machine	O
.	O
</s>
<s>
The	O
likely	O
most	O
popular	O
entertainment	O
oriented	O
development	O
suite	O
was	O
the	O
Shoot'Em-Up	B-Application
Construction	I-Application
Kit	I-Application
,	O
affectionately	O
known	O
as	O
SEUCK	B-Application
.	O
</s>
<s>
SEUCK	B-Application
allowed	O
those	O
non-skilled	O
in	O
programming	O
to	O
create	O
original	O
,	O
professional-looking	O
shooting	O
games	O
.	O
</s>
<s>
Garry	B-Application
Kitchen	I-Application
's	I-Application
Gamemaker	I-Application
and	O
Arcade	B-Device
Game	I-Device
Construction	I-Device
Kit	I-Device
also	O
allowed	O
non-programmers	O
to	O
create	O
simple	O
games	O
with	O
little	O
effort	O
.	O
</s>
<s>
Text	O
adventure	O
game	O
tools	O
included	O
The	B-Application
Quill	I-Application
and	O
Graphic	B-Application
Adventure	I-Application
Creator	I-Application
development	O
suites	O
.	O
</s>
<s>
The	O
Pinball	B-Application
Construction	I-Application
Set	I-Application
gave	O
users	O
a	O
pinball	O
machine	O
to	O
design	O
.	O
</s>
<s>
There	O
are	O
many	O
tools	O
available	O
today	O
,	O
including	O
IDEs	O
such	O
as	O
CBM	O
prg	O
Studio	O
,	O
Relaunch64	O
,	O
and	O
WUDSN	O
IDE	O
,	O
which	O
is	O
a	O
plug-in	B-Application
for	O
the	O
open	B-Application
source	I-Application
Eclipse	B-Application
IDE	I-Application
.	O
</s>
<s>
Along	O
with	O
small	O
C	O
compilers	B-Language
such	O
as	O
cc65	B-Application
,	O
there	O
are	O
many	O
assemblers	B-Language
and	O
cross	O
assemblers	B-Language
to	O
be	O
used	O
on	O
modern	O
day	O
PCs	O
:	O
</s>
<s>
ca65	B-Application
(	O
which	O
is	O
part	O
of	O
cc65	B-Application
.	O
)	O
</s>
<s>
C64List	O
by	O
Jeff	O
Hoag	O
is	O
both	O
a	O
cross	O
assembler	B-Language
and	O
cross-platform	O
BASIC	B-Language
editor/tokenizer	O
that	O
allows	O
developers	O
to	O
write	O
mixed	O
BASIC/assembly	O
programs	O
in	O
a	O
text	O
file	O
on	O
a	O
PC	O
and	O
compile	B-Language
it	O
into	O
a	O
single	O
.prg	B-Device
file	O
that	O
can	O
be	O
executed	O
on	O
an	O
actual	O
C64	O
or	O
emulator	O
.	O
</s>
<s>
Tools	O
such	O
as	O
PuCrunch	O
,	O
an	O
LZ77	O
data	O
and	O
executable	O
self	O
extracting	O
compression	O
program	O
,	O
are	O
also	O
available	O
released	O
under	O
GNU	B-Application
LGPL	I-Application
.	O
</s>
<s>
Using	O
CodeNet	O
it	O
is	O
possible	O
to	O
transfer	O
and	O
execute	O
programs	O
to	O
a	O
C64	O
via	O
a	O
TCP/IP	B-Protocol
network	I-Protocol
cable	O
from	O
a	O
PC	O
.	O
</s>
<s>
Although	O
this	O
does	O
require	O
an	O
Ethernet	B-Protocol
adapter	I-Protocol
on	O
the	O
C64	O
such	O
as	O
Individual	O
Computers	O
RR-Net	O
or	O
an	O
appropriate	O
version	O
of	O
the	O
1541	B-Device
Ultimate	I-Device
.	O
</s>
<s>
The	O
Star	O
Commander	O
is	O
a	O
DOS-based	O
tool	O
,	O
cbm4linux	O
is	O
a	O
Linux	O
tool	O
,	O
and	O
cbm4win	O
is	O
a	O
Windows	O
tool	O
to	O
transfer	O
data	O
from	O
an	O
original	O
floppy	O
drive	O
to	O
the	O
PC	O
,	O
or	O
vice	O
versa	O
,	O
using	O
a	O
simple	O
X-cable	O
.	O
</s>
<s>
The	O
Individual	B-Device
Computers	I-Device
Catweasel	I-Device
allows	O
PC	O
users	O
to	O
use	O
their	O
own	O
floppy	O
drive	O
to	O
read	O
C64	O
disks	O
.	O
</s>
<s>
These	O
include	O
VICE	O
,	O
which	O
is	O
free	O
and	O
runs	O
on	O
most	O
modern	O
as	O
well	O
as	O
some	O
older	O
platforms	O
;	O
CCS64	O
,	O
which	O
is	O
available	O
for	O
Windows	O
and	O
is	O
written	O
by	O
Per	O
Håkan	O
Sundell	O
;	O
and	O
Power64	O
,	O
which	O
has	O
versions	O
for	O
Mac	B-Operating_System
OS	I-Operating_System
X	I-Operating_System
and	O
OS	B-General_Concept
9	O
.	O
</s>
<s>
Special	O
hardware	O
has	O
also	O
been	O
designed	O
to	O
aid	O
the	O
conservation	O
of	O
software	O
,	O
such	O
as	O
the	O
IDE64	B-Device
cartridge	B-Protocol
,	O
which	O
allows	O
the	O
user	O
to	O
connect	O
a	O
modern	O
PC	O
IDE	O
ATA	O
hard	O
drive	O
or	O
a	O
CompactFlash	B-Device
flashcard	O
directly	O
to	O
the	O
machine	O
,	O
giving	O
the	O
possibility	O
to	O
copy	O
software	O
onto	O
the	O
hard	O
drive	O
and	O
use	O
it	O
from	O
there	O
,	O
preventing	O
wear	O
on	O
a	O
decades-old	O
floppy	O
disk	O
.	O
</s>
<s>
Nintendo	O
's	O
Virtual	B-Application
Console	I-Application
service	O
offers	O
Commodore	O
64	O
games	O
for	O
download	O
on	O
the	B-Operating_System
Wii	I-Operating_System
console	O
in	O
North	O
America	O
and	O
Europe	O
.	O
</s>
