A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
U
V
W
X
Y
Z
Misc.
Okidata
Olicom
Olivetti Systems
On Technology/Da Vinci Systems
Ontrack Computer Systems
Optima Technologies
Oracle Corp.
Orchid Technology
Ositech
Outlook Software
Output Technology