O

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