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		Atari Inc
7	Ocean Software Ltd	United Kingdom
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	Novocherkassk
26	Omega Ltd
27	Omega Software [1]		Cambridge Research
28	Omega Software [2]	United Kingdom
29	Omega Software [3]	Ireland
30	Omega Software GFX		Jan Palenicek
31	Omega Software Ltd		Alpha-Omega Software
32	Omega-Soft [1]	United Kingdom
33	Omega-Soft [2]	Germany
34	Omen Software		Wordlight Ltd
35	Omicron Projects	Spain
36	Omikron Software [1]		Claus Jahn
37	Omikron Software [2]	Czech Republic
38	OMK Software S.L.	Spain
39	Omni Software	United Kingdom
40	Omnisoft	United Kingdom
41	Omycron Software	Portugal
42	ON6LJ Software	United Kingdom
43	One Week Productions	United Kingdom
44	Oni Records	United Kingdom
45	Online PLC
46	Onspec Software	United Kingdom
47	OOPS	Russia	Odintsovo
48	OpalSoft	United Kingdom
49	Opera Soft S.A.	Spain
50	Optical Brothers	Belarus	Minsk
51	Optical Illusions	United Kingdom
52	Optimal Group	Russia
53	Optimus Software	United Kingdom
54	Options International	United Kingdom
55	Orange Enterprizes	United Kingdom
56	Orange Software	United Kingdom
57	Orbis Publishing Ltd	United Kingdom
58	Origin Systems Inc	United States
59	Original Computer Association	Russia
60	Original Computers Associaton	Russia
61	Original Soft	Italy
62	Orijon Software	Germany
63	Orin Soft	Czech Republic
64	Orion [1]		Illusion Dreams
65	Orion [2]	Poland
66	Orion [3]	Portugal
67	Orion Data Ltd	United Kingdom
68	Orion Software [1]	United Kingdom
69	Orion Software [2]	Czech Republic
70	Orionsoft	Spain
71	Orpheus Ltd	United Kingdom
72	Orwin Software		Michael Orwin
73	Oscar & Spilberg
74	Oscar Soft	Spain
75	Oscar Systems	United Kingdom
76	osh Group	Russia
77	OSSoft	United Kingdom
78	Outland Corp	Moldova	Kishinev
79	Outlaw		Palace Video Group
80	Outlet		Chezron Software
81	Outsiders
82	Oversun Frendship	Russia	Severodvinsk
83	Oxbridge Technology Ltd	United Kingdom
84	Oxford Computer Publications Ltd
85	Oxford Computer Publishing		Oxford Computer Publications Ltd
86	Oxford Computer Systems	United Kingdom
87	Oxford Digital Enterprises		Empire Interactive
88	Oxford Mobius		Nigel Lea
89	Oxford Software Group	United Kingdom
90	Oxford Technologies	United Kingdom
91	Oxygen Software	United Kingdom
92	Oz Software	United Kingdom