O

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