O

	Name	Country	City
1	O.E. Ltd	United Kingdom
2	O.I.C. Ltd	United Kingdom
3	O.Sheen Software	United Kingdom
4	Oasis Software	United Kingdom
5	Oberon Group	Ukraine	Odessa
6	Ocean Software Ltd	United Kingdom
7	Ocean Software Ltd		Atari Inc
8	Ocean-Imagine Hellas	Greece
9	OCTA Soft	Hungary
10	Octopus Software	United Kingdom
11	Odin Computer Graphics Ltd		Paul McKenna
12	Odisea Software	Spain
13	Odyssey Computing	United Kingdom
14	Ofites Informatica	Spain
15	Okoloko Engineering Software		S. Okoloku
16	Old English Software		R. Bingle
17	Oldrich Palenicek	Czech Republic
18	Oldsoft		Zdenek Stary
19	Oleg N. Cher	Ukraine
20	Oleg Oursoft	Russia
21	Olympic Software	United Kingdom
22	Omega Games	United Kingdom
23	Omega Group	Russia	St.Petersburg
24	Omega Hackers Club	Russia	Chelyabinsk
25	Omega Hackers Group	Russia	Rostov-on-Don
26	Omega Software [1]		Cambridge Research
27	Omega Software [2]	United Kingdom
28	Omega Software [3]	Ireland
29	Omega Software GFX		Jan Palenicek
30	Omega Software Ltd		Alpha-Omega Software
31	Omega-Soft [1]	United Kingdom
32	Omega-Soft [2]	Germany
33	Omen Software		Wordlight Ltd
34	Omicron Projects	Spain
35	Omikron Software [1]		Claus Jahn
36	Omikron Software [2]	Czech Republic
37	OMK Software S.L.	Spain
38	Omni Software	United Kingdom
39	Omnisoft	United Kingdom
40	Omycron Software	Portugal
41	ON6LJ Software	United Kingdom
42	One Week Productions	United Kingdom
43	Oni Records	United Kingdom
44	Online PLC
45	Onspec Software	United Kingdom
46	OOPS	Russia	Odintsovo
47	OpalSoft	United Kingdom
48	Opera Soft S.A.	Spain
49	Optical Brothers	Belarus	Minsk
50	Optical Illusions	United Kingdom
51	Optimal Group	Russia
52	Optimus Software	United Kingdom
53	Options International	United Kingdom
54	Orange Enterprizes	United Kingdom
55	Orange Software	United Kingdom
56	Orbis Publishing Ltd	United Kingdom
57	Origin Systems Inc	United States
58	Original Computer Association	Russia
59	Original Computers Associaton	Russia
60	Original Soft	Italy
61	Orijon Software	Germany
62	Orin Soft	Czech Republic
63	Orion [1]		Illusion Dreams
64	Orion [2]	Poland
65	Orion [3]	Portugal
66	Orion Data Ltd	United Kingdom
67	Orion Software [1]	United Kingdom
68	Orion Software [2]	Czech Republic
69	Orionsoft	Spain
70	Orpheus Ltd	United Kingdom
71	Orwin Software		Michael Orwin
72	Oscar & Spilberg
73	Oscar Soft	Spain
74	Oscar Systems	United Kingdom
75	osh Group	Russia
76	OSSoft	United Kingdom
77	Outland Corp	Moldavia	Chişinău
78	Outlaw		Palace Video Group
79	Outlet		Chezron Software
80	Outsiders
81	Oversun Frendship	Russia	Severodvinsk
82	Oxbridge Technology Ltd	United Kingdom
83	Oxford Computer Publications Ltd
84	Oxford Computer Publishing		Oxford Computer Publications Ltd
85	Oxford Computer Systems	United Kingdom
86	Oxford Digital Enterprises		Empire Interactive
87	Oxford Mobius		Nigel Lea
88	Oxford Software Group	United Kingdom
89	Oxford Technologies	United Kingdom
90	Oxygen Software	United Kingdom
91	Oz Software	United Kingdom